./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI --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 8f9453cad2383b5119b308e041fed5f4a740e7abd43cb8ad7833872af20a8d57 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:33:10,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:33:10,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:33:10,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:33:10,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:33:10,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:33:10,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:33:10,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:33:10,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:33:10,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:33:10,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:33:10,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:33:10,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:33:10,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:33:10,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:33:10,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:33:10,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:33:10,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:33:10,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:33:10,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:33:10,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:33:10,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:33:10,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:33:10,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:33:10,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:33:10,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:33:10,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:33:10,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:33:10,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:33:10,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:33:10,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:33:10,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:33:10,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:33:10,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:33:10,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:33:10,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:33:10,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:33:10,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:33:10,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:33:10,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:33:10,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:33:10,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-03 03:33:10,234 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:33:10,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:33:10,234 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:33:10,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:33:10,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:33:10,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:33:10,236 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:33:10,237 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:33:10,237 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:33:10,237 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:33:10,238 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:33:10,238 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:33:10,238 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:33:10,238 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:33:10,239 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:33:10,239 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:33:10,239 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:33:10,240 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:33:10,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-03 03:33:10,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-03 03:33:10,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:33:10,241 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:33:10,242 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 03:33:10,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:33:10,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:33:10,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:33:10,243 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-03 03:33:10,243 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-03 03:33:10,244 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-03 03:33:10,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:33:10,244 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:33:10,245 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:33:10,245 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:33:10,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:33:10,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:33:10,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:33:10,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:33:10,247 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:33:10,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:33:10,247 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:33:10,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:33:10,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:33:10,248 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_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f9453cad2383b5119b308e041fed5f4a740e7abd43cb8ad7833872af20a8d57 [2022-11-03 03:33:10,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:33:10,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:33:10,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:33:10,576 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:33:10,576 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:33:10,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i [2022-11-03 03:33:10,658 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/data/75065e7a7/7d81403b7720459ebc04035d1ae5a541/FLAGec675fd03 [2022-11-03 03:33:11,197 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:33:11,209 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i [2022-11-03 03:33:11,221 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/data/75065e7a7/7d81403b7720459ebc04035d1ae5a541/FLAGec675fd03 [2022-11-03 03:33:11,518 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/data/75065e7a7/7d81403b7720459ebc04035d1ae5a541 [2022-11-03 03:33:11,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:33:11,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:33:11,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:33:11,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:33:11,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:33:11,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:33:11" (1/1) ... [2022-11-03 03:33:11,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21cd773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:11, skipping insertion in model container [2022-11-03 03:33:11,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:33:11" (1/1) ... [2022-11-03 03:33:11,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:33:11,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:33:11,937 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i[22636,22649] [2022-11-03 03:33:11,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:33:11,998 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:33:12,041 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i[22636,22649] [2022-11-03 03:33:12,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:33:12,094 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:33:12,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:12 WrapperNode [2022-11-03 03:33:12,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:33:12,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:33:12,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:33:12,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:33:12,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:12" (1/1) ... [2022-11-03 03:33:12,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:12" (1/1) ... [2022-11-03 03:33:12,181 INFO L138 Inliner]: procedures = 129, calls = 79, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 203 [2022-11-03 03:33:12,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:33:12,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:33:12,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:33:12,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:33:12,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:12" (1/1) ... [2022-11-03 03:33:12,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:12" (1/1) ... [2022-11-03 03:33:12,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:12" (1/1) ... [2022-11-03 03:33:12,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:12" (1/1) ... [2022-11-03 03:33:12,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:12" (1/1) ... [2022-11-03 03:33:12,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:12" (1/1) ... [2022-11-03 03:33:12,237 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:12" (1/1) ... [2022-11-03 03:33:12,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:12" (1/1) ... [2022-11-03 03:33:12,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:33:12,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:33:12,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:33:12,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:33:12,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:12" (1/1) ... [2022-11-03 03:33:12,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:33:12,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:12,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:33:12,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:33:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-11-03 03:33:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-11-03 03:33:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:33:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:33:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:33:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:33:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:33:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2022-11-03 03:33:12,343 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2022-11-03 03:33:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:33:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:33:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2022-11-03 03:33:12,344 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2022-11-03 03:33:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:33:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2022-11-03 03:33:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2022-11-03 03:33:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:33:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:33:12,533 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:33:12,535 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:33:13,149 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:33:13,279 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:33:13,279 INFO L300 CfgBuilder]: Removed 33 assume(true) statements. [2022-11-03 03:33:13,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:33:13 BoogieIcfgContainer [2022-11-03 03:33:13,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:33:13,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:33:13,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:33:13,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:33:13,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:33:11" (1/3) ... [2022-11-03 03:33:13,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441436dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:33:13, skipping insertion in model container [2022-11-03 03:33:13,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:12" (2/3) ... [2022-11-03 03:33:13,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441436dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:33:13, skipping insertion in model container [2022-11-03 03:33:13,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:33:13" (3/3) ... [2022-11-03 03:33:13,292 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-2.i [2022-11-03 03:33:13,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:33:13,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 83 error locations. [2022-11-03 03:33:13,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:33:13,367 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;@1f0c9634, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:33:13,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2022-11-03 03:33:13,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 92 states have (on average 2.3152173913043477) internal successors, (213), 180 states have internal predecessors, (213), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-03 03:33:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 03:33:13,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:13,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 03:33:13,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:33:13,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash 536459, now seen corresponding path program 1 times [2022-11-03 03:33:13,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:13,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244317148] [2022-11-03 03:33:13,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:13,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:33:13,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:13,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244317148] [2022-11-03 03:33:13,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244317148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:13,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:13,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:33:13,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657519356] [2022-11-03 03:33:13,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:13,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:33:13,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:13,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:33:13,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:33:13,599 INFO L87 Difference]: Start difference. First operand has 194 states, 92 states have (on average 2.3152173913043477) internal successors, (213), 180 states have internal predecessors, (213), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-03 03:33:13,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:13,753 INFO L93 Difference]: Finished difference Result 193 states and 214 transitions. [2022-11-03 03:33:13,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:33:13,756 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) Word has length 3 [2022-11-03 03:33:13,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:13,775 INFO L225 Difference]: With dead ends: 193 [2022-11-03 03:33:13,775 INFO L226 Difference]: Without dead ends: 192 [2022-11-03 03:33:13,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:33:13,785 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:13,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-03 03:33:13,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-03 03:33:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 89 states have (on average 2.101123595505618) internal successors, (187), 178 states have internal predecessors, (187), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:33:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 213 transitions. [2022-11-03 03:33:13,838 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 213 transitions. Word has length 3 [2022-11-03 03:33:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:13,838 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 213 transitions. [2022-11-03 03:33:13,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-03 03:33:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 213 transitions. [2022-11-03 03:33:13,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 03:33:13,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:13,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 03:33:13,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:33:13,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting chain_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:33:13,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:13,842 INFO L85 PathProgramCache]: Analyzing trace with hash 16931764, now seen corresponding path program 1 times [2022-11-03 03:33:13,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:13,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405248278] [2022-11-03 03:33:13,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:13,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:33:13,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:13,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405248278] [2022-11-03 03:33:13,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405248278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:13,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:13,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:33:13,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963883017] [2022-11-03 03:33:13,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:13,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:13,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:13,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:13,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:13,982 INFO L87 Difference]: Start difference. First operand 192 states and 213 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:14,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:14,201 INFO L93 Difference]: Finished difference Result 190 states and 211 transitions. [2022-11-03 03:33:14,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:14,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-03 03:33:14,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:14,208 INFO L225 Difference]: With dead ends: 190 [2022-11-03 03:33:14,209 INFO L226 Difference]: Without dead ends: 190 [2022-11-03 03:33:14,212 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 [2022-11-03 03:33:14,214 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 13 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:14,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 288 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:33:14,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-03 03:33:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-11-03 03:33:14,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 89 states have (on average 2.0786516853932584) internal successors, (185), 176 states have internal predecessors, (185), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:33:14,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 211 transitions. [2022-11-03 03:33:14,243 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 211 transitions. Word has length 4 [2022-11-03 03:33:14,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:14,243 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 211 transitions. [2022-11-03 03:33:14,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:14,243 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 211 transitions. [2022-11-03 03:33:14,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 03:33:14,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:14,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 03:33:14,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:33:14,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting chain_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:33:14,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:14,249 INFO L85 PathProgramCache]: Analyzing trace with hash 16931765, now seen corresponding path program 1 times [2022-11-03 03:33:14,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:14,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561695458] [2022-11-03 03:33:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:14,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:33:14,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:14,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561695458] [2022-11-03 03:33:14,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561695458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:14,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:14,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:33:14,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561666406] [2022-11-03 03:33:14,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:14,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:14,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:14,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:14,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:14,384 INFO L87 Difference]: Start difference. First operand 190 states and 211 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:14,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:14,546 INFO L93 Difference]: Finished difference Result 188 states and 209 transitions. [2022-11-03 03:33:14,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:14,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-03 03:33:14,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:14,549 INFO L225 Difference]: With dead ends: 188 [2022-11-03 03:33:14,549 INFO L226 Difference]: Without dead ends: 188 [2022-11-03 03:33:14,551 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 [2022-11-03 03:33:14,556 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 11 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:14,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 291 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:33:14,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-03 03:33:14,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-11-03 03:33:14,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 89 states have (on average 2.056179775280899) internal successors, (183), 174 states have internal predecessors, (183), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:33:14,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 209 transitions. [2022-11-03 03:33:14,578 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 209 transitions. Word has length 4 [2022-11-03 03:33:14,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:14,578 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 209 transitions. [2022-11-03 03:33:14,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:14,579 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 209 transitions. [2022-11-03 03:33:14,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 03:33:14,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:14,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 03:33:14,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:33:14,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting chain_nodeErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:33:14,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:14,580 INFO L85 PathProgramCache]: Analyzing trace with hash -908428318, now seen corresponding path program 1 times [2022-11-03 03:33:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:14,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059986175] [2022-11-03 03:33:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:33:14,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:14,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059986175] [2022-11-03 03:33:14,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059986175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:14,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:14,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:33:14,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905791479] [2022-11-03 03:33:14,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:14,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:33:14,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:14,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:33:14,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:33:14,892 INFO L87 Difference]: Start difference. First operand 188 states and 209 transitions. Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:15,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:15,235 INFO L93 Difference]: Finished difference Result 183 states and 204 transitions. [2022-11-03 03:33:15,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:33:15,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 03:33:15,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:15,237 INFO L225 Difference]: With dead ends: 183 [2022-11-03 03:33:15,237 INFO L226 Difference]: Without dead ends: 183 [2022-11-03 03:33:15,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:33:15,239 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 38 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:15,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 578 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:33:15,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-03 03:33:15,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-11-03 03:33:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 89 states have (on average 2.0) internal successors, (178), 169 states have internal predecessors, (178), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:33:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 204 transitions. [2022-11-03 03:33:15,250 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 204 transitions. Word has length 6 [2022-11-03 03:33:15,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:15,251 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 204 transitions. [2022-11-03 03:33:15,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:15,251 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 204 transitions. [2022-11-03 03:33:15,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 03:33:15,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:15,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 03:33:15,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:33:15,252 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting chain_nodeErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:33:15,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:15,253 INFO L85 PathProgramCache]: Analyzing trace with hash -908428317, now seen corresponding path program 1 times [2022-11-03 03:33:15,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:15,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248734879] [2022-11-03 03:33:15,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:15,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:33:15,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:15,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248734879] [2022-11-03 03:33:15,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248734879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:15,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:15,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:15,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979310157] [2022-11-03 03:33:15,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:15,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:33:15,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:15,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:33:15,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:33:15,582 INFO L87 Difference]: Start difference. First operand 183 states and 204 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:15,921 INFO L93 Difference]: Finished difference Result 178 states and 199 transitions. [2022-11-03 03:33:15,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:33:15,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 03:33:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:15,922 INFO L225 Difference]: With dead ends: 178 [2022-11-03 03:33:15,922 INFO L226 Difference]: Without dead ends: 178 [2022-11-03 03:33:15,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:33:15,923 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 29 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:15,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 408 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:33:15,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-03 03:33:15,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-11-03 03:33:15,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 89 states have (on average 1.9438202247191012) internal successors, (173), 164 states have internal predecessors, (173), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:33:15,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 199 transitions. [2022-11-03 03:33:15,940 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 199 transitions. Word has length 6 [2022-11-03 03:33:15,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:15,940 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 199 transitions. [2022-11-03 03:33:15,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:15,941 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 199 transitions. [2022-11-03 03:33:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 03:33:15,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:15,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:15,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:33:15,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting chain_nodeErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:33:15,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:15,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1903493348, now seen corresponding path program 1 times [2022-11-03 03:33:15,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:15,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811991621] [2022-11-03 03:33:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:15,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:33:16,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:16,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811991621] [2022-11-03 03:33:16,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811991621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:16,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:16,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:16,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593838954] [2022-11-03 03:33:16,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:16,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:33:16,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:16,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:33:16,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:33:16,029 INFO L87 Difference]: Start difference. First operand 178 states and 199 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:16,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:16,219 INFO L93 Difference]: Finished difference Result 177 states and 198 transitions. [2022-11-03 03:33:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:33:16,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 03:33:16,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:16,221 INFO L225 Difference]: With dead ends: 177 [2022-11-03 03:33:16,221 INFO L226 Difference]: Without dead ends: 177 [2022-11-03 03:33:16,222 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 [2022-11-03 03:33:16,224 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 8 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:16,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 386 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:33:16,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-03 03:33:16,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-03 03:33:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 89 states have (on average 1.9325842696629214) internal successors, (172), 163 states have internal predecessors, (172), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:33:16,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2022-11-03 03:33:16,244 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 7 [2022-11-03 03:33:16,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:16,245 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2022-11-03 03:33:16,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:16,245 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2022-11-03 03:33:16,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 03:33:16,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:16,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:16,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:33:16,246 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting chain_nodeErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:33:16,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:16,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1903493349, now seen corresponding path program 1 times [2022-11-03 03:33:16,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:16,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68332872] [2022-11-03 03:33:16,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:16,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:16,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:33:16,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:16,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68332872] [2022-11-03 03:33:16,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68332872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:16,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:16,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:16,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769658494] [2022-11-03 03:33:16,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:16,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:33:16,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:16,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:33:16,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:33:16,414 INFO L87 Difference]: Start difference. First operand 177 states and 198 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:16,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:16,587 INFO L93 Difference]: Finished difference Result 176 states and 197 transitions. [2022-11-03 03:33:16,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:33:16,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 03:33:16,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:16,589 INFO L225 Difference]: With dead ends: 176 [2022-11-03 03:33:16,590 INFO L226 Difference]: Without dead ends: 176 [2022-11-03 03:33:16,590 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 [2022-11-03 03:33:16,593 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 6 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:16,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 392 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:33:16,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-03 03:33:16,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-11-03 03:33:16,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 89 states have (on average 1.9213483146067416) internal successors, (171), 162 states have internal predecessors, (171), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:33:16,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 197 transitions. [2022-11-03 03:33:16,603 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 197 transitions. Word has length 7 [2022-11-03 03:33:16,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:16,604 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 197 transitions. [2022-11-03 03:33:16,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:33:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 197 transitions. [2022-11-03 03:33:16,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 03:33:16,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:16,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:16,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:33:16,605 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:33:16,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash -365221685, now seen corresponding path program 1 times [2022-11-03 03:33:16,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:16,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978607396] [2022-11-03 03:33:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:16,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:33:16,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:16,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978607396] [2022-11-03 03:33:16,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978607396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:16,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:16,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:33:16,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269241017] [2022-11-03 03:33:16,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:16,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:33:16,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:16,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:33:16,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:33:16,890 INFO L87 Difference]: Start difference. First operand 176 states and 197 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:33:17,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:17,317 INFO L93 Difference]: Finished difference Result 175 states and 196 transitions. [2022-11-03 03:33:17,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:33:17,317 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-03 03:33:17,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:17,319 INFO L225 Difference]: With dead ends: 175 [2022-11-03 03:33:17,319 INFO L226 Difference]: Without dead ends: 175 [2022-11-03 03:33:17,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:33:17,321 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 150 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:17,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 329 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:33:17,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-03 03:33:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-11-03 03:33:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 89 states have (on average 1.9101123595505618) internal successors, (170), 161 states have internal predecessors, (170), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:33:17,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 196 transitions. [2022-11-03 03:33:17,329 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 196 transitions. Word has length 13 [2022-11-03 03:33:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:17,331 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 196 transitions. [2022-11-03 03:33:17,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:33:17,332 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 196 transitions. [2022-11-03 03:33:17,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 03:33:17,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:17,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:17,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:33:17,333 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:33:17,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:17,334 INFO L85 PathProgramCache]: Analyzing trace with hash -365221684, now seen corresponding path program 1 times [2022-11-03 03:33:17,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:17,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785896264] [2022-11-03 03:33:17,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:17,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:33:17,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:17,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785896264] [2022-11-03 03:33:17,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785896264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:17,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:17,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:33:17,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944896009] [2022-11-03 03:33:17,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:17,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:33:17,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:17,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:33:17,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:33:17,622 INFO L87 Difference]: Start difference. First operand 175 states and 196 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:33:17,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:17,950 INFO L93 Difference]: Finished difference Result 174 states and 195 transitions. [2022-11-03 03:33:17,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:33:17,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-03 03:33:17,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:17,952 INFO L225 Difference]: With dead ends: 174 [2022-11-03 03:33:17,952 INFO L226 Difference]: Without dead ends: 174 [2022-11-03 03:33:17,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:33:17,955 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 326 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:17,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 164 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:33:17,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-03 03:33:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-11-03 03:33:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 89 states have (on average 1.898876404494382) internal successors, (169), 160 states have internal predecessors, (169), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:33:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 195 transitions. [2022-11-03 03:33:17,961 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 195 transitions. Word has length 13 [2022-11-03 03:33:17,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:17,962 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 195 transitions. [2022-11-03 03:33:17,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:33:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 195 transitions. [2022-11-03 03:33:17,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 03:33:17,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:17,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:17,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:33:17,967 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:33:17,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:17,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1564547253, now seen corresponding path program 1 times [2022-11-03 03:33:17,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:17,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259000213] [2022-11-03 03:33:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:17,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:18,677 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:33:18,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:18,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259000213] [2022-11-03 03:33:18,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259000213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:33:18,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230234968] [2022-11-03 03:33:18,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:18,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:33:18,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:18,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:33:18,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:33:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:18,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-03 03:33:18,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:33:18,938 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 03:33:18,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2022-11-03 03:33:19,002 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:33:19,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 23 [2022-11-03 03:33:19,181 INFO L356 Elim1Store]: treesize reduction 24, result has 52.9 percent of original size [2022-11-03 03:33:19,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 03:33:19,486 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:33:19,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 19 [2022-11-03 03:33:19,655 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|))) (or (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse0 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse0) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse0 (select |c_#valid| .cse0)))))) (and (or .cse1 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)) (exists ((|chain_node_~node~0#1.base| Int)) (= (select |c_#valid| |chain_node_~node~0#1.base|) 1))) (and .cse1 (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse2 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse2 (select |c_#valid| .cse2))))))))) is different from false [2022-11-03 03:33:20,139 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|))) (or (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse0 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse0) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse0 (select |c_#valid| .cse0)))))) (and (or .cse1 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)) (exists ((|chain_node_~node~0#1.base| Int)) (= (select |c_#valid| |chain_node_~node~0#1.base|) 1))) (and .cse1 (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse2 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse2 (select |c_#valid| .cse2))))))))) is different from true [2022-11-03 03:33:20,306 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (or (and .cse0 (exists ((|chain_node_~node~0#1.base| Int)) (= (select |c_#valid| |chain_node_~node~0#1.base|) 1))) (and (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse1 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse1) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse1 (select |c_#valid| .cse1)))))) .cse0) (and (exists ((|ULTIMATE.start_create_sll_~#list~0#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~#list~0#1.base|) 1)) (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse2 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse2 (select |c_#valid| .cse2))))))))) is different from false [2022-11-03 03:33:20,858 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (or (and .cse0 (exists ((|chain_node_~node~0#1.base| Int)) (= (select |c_#valid| |chain_node_~node~0#1.base|) 1))) (and (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse1 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse1) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse1 (select |c_#valid| .cse1)))))) .cse0) (and (exists ((|ULTIMATE.start_create_sll_~#list~0#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~#list~0#1.base|) 1)) (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse2 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse2 (select |c_#valid| .cse2))))))))) is different from true [2022-11-03 03:33:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:33:20,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:33:23,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230234968] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:33:23,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [728653822] [2022-11-03 03:33:23,028 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-03 03:33:23,028 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:33:23,033 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:33:23,039 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:33:23,039 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:33:23,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:33:23,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,249 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:33:23,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:33:23,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:33:23,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:33:23,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:33:23,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:33:23,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:33:23,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:33:23,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:33:23,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:33:23,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,380 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:33:23,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:33:23,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:33:23,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,440 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:33:23,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:33:23,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:33:23,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,542 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:33:23,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:33:23,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,626 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:33:23,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:33:23,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:33:23,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:33:23,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:33:23,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,833 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:33:23,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:33:23,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:33:23,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:23,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:33:23,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:33:24,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:33:24,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:33:24,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:33:24,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,192 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:33:24,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:33:24,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:33:24,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:33:24,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:33:24,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:33:24,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,375 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:33:24,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:33:24,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:33:24,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:33:24,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:33:24,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:33:24,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,643 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:33:24,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:33:24,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:33:24,742 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:33:24,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:33:24,767 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 119 for LOIs [2022-11-03 03:33:25,712 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:33:37,080 WARN L234 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 170 DAG size of output: 155 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:33:45,401 WARN L234 SmtUtils]: Spent 8.12s on a formula simplification. DAG size of input: 184 DAG size of output: 163 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:33:55,385 WARN L234 SmtUtils]: Spent 9.79s on a formula simplification. DAG size of input: 200 DAG size of output: 173 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:07,868 WARN L234 SmtUtils]: Spent 12.20s on a formula simplification. DAG size of input: 214 DAG size of output: 187 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:34:10,042 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3621#(and (= (select (store (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base| 1) |ULTIMATE.start_create_sll_~#list~0#1.base|) 0) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p2~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_main_~#p2~0#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_create_sll_~#list~0#1.base|) |ULTIMATE.start_create_sll_~#list~0#1.offset|) |ULTIMATE.start_create_sll_#t~mem9#1.offset|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (not (= (select |#valid| |ULTIMATE.start_create_sll_~pp1#1.base|) 1)) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base|) 0) (= |ULTIMATE.start_create_sll_~#list~0#1.offset| 0) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |ULTIMATE.start_main_~#p1~0#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p1~0#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.offset| |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select |#valid| |ULTIMATE.start_create_sll_~#list~0#1.base|) 1) (= |ULTIMATE.start_create_sll_~pp2#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base|) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_create_sll_~#list~0#1.base|) |ULTIMATE.start_create_sll_~#list~0#1.offset|) |ULTIMATE.start_create_sll_#t~mem9#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_create_sll_~#list~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_create_sll_~pp2#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (= |ULTIMATE.start_main_~#p2~0#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (<= (+ |ULTIMATE.start_create_sll_~#list~0#1.offset| 4) (select |#length| |ULTIMATE.start_create_sll_~#list~0#1.base|)) (< 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-03 03:34:10,042 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:34:10,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:34:10,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2022-11-03 03:34:10,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600241157] [2022-11-03 03:34:10,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:34:10,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:34:10,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:10,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:34:10,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=899, Unknown=5, NotChecked=126, Total=1190 [2022-11-03 03:34:10,045 INFO L87 Difference]: Start difference. First operand 174 states and 195 transitions. Second operand has 18 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:34:10,334 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|)) (.cse1 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (let ((.cse0 (or .cse3 .cse1))) (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) .cse0 (or (= |c_ULTIMATE.start_create_sll_~pp2#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|) (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp2#1.base|) 1)) .cse1 (or (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse2 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse2 (select |c_#valid| .cse2)))))) (and .cse0 (exists ((|chain_node_~node~0#1.base| Int)) (= (select |c_#valid| |chain_node_~node~0#1.base|) 1))) (and .cse3 (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse4 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse4) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse4 (select |c_#valid| .cse4))))))))))) is different from false [2022-11-03 03:34:10,338 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse3 (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|)) (.cse1 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (let ((.cse0 (or .cse3 .cse1))) (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) .cse0 (or (= |c_ULTIMATE.start_create_sll_~pp2#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|) (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp2#1.base|) 1)) .cse1 (or (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse2 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse2 (select |c_#valid| .cse2)))))) (and .cse0 (exists ((|chain_node_~node~0#1.base| Int)) (= (select |c_#valid| |chain_node_~node~0#1.base|) 1))) (and .cse3 (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse4 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse4) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse4 (select |c_#valid| .cse4))))))))))) is different from true [2022-11-03 03:34:10,344 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|))) (let ((.cse0 (or .cse2 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)))) (and .cse0 (or (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse1 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse1) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse1 (select |c_#valid| .cse1)))))) (and .cse0 (exists ((|chain_node_~node~0#1.base| Int)) (= (select |c_#valid| |chain_node_~node~0#1.base|) 1))) (and .cse2 (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse3 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse3) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse3 (select |c_#valid| .cse3))))))))))) is different from false [2022-11-03 03:34:10,347 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse2 (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|))) (let ((.cse0 (or .cse2 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)))) (and .cse0 (or (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse1 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse1) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse1 (select |c_#valid| .cse1)))))) (and .cse0 (exists ((|chain_node_~node~0#1.base| Int)) (= (select |c_#valid| |chain_node_~node~0#1.base|) 1))) (and .cse2 (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse3 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse3) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse3 (select |c_#valid| .cse3))))))))))) is different from true [2022-11-03 03:34:10,354 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (and .cse0 (or (and .cse0 (exists ((|chain_node_~node~0#1.base| Int)) (= (select |c_#valid| |chain_node_~node~0#1.base|) 1))) (and (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse1 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse1) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse1 (select |c_#valid| .cse1)))))) .cse0) (and (exists ((|ULTIMATE.start_create_sll_~#list~0#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~#list~0#1.base|) 1)) (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse2 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse2 (select |c_#valid| .cse2)))))))))) is different from false [2022-11-03 03:34:10,358 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (and .cse0 (or (and .cse0 (exists ((|chain_node_~node~0#1.base| Int)) (= (select |c_#valid| |chain_node_~node~0#1.base|) 1))) (and (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse1 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse1) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse1 (select |c_#valid| .cse1)))))) .cse0) (and (exists ((|ULTIMATE.start_create_sll_~#list~0#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~#list~0#1.base|) 1)) (exists ((|v_old(#valid)_AFTER_CALL_2| (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (let ((.cse2 (@diff |v_old(#valid)_AFTER_CALL_2| |c_#valid|))) (and (<= (+ 2 .cse2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_old(#valid)_AFTER_CALL_2| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_old(#valid)_AFTER_CALL_2| |chain_node_~node~0#1.base|) 1) (= |c_#valid| (store |v_old(#valid)_AFTER_CALL_2| .cse2 (select |c_#valid| .cse2)))))))))) is different from true [2022-11-03 03:34:10,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:10,978 INFO L93 Difference]: Finished difference Result 179 states and 203 transitions. [2022-11-03 03:34:10,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:34:10,979 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 25 [2022-11-03 03:34:10,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:10,980 INFO L225 Difference]: With dead ends: 179 [2022-11-03 03:34:10,980 INFO L226 Difference]: Without dead ends: 179 [2022-11-03 03:34:10,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 47.9s TimeCoverageRelationStatistics Valid=205, Invalid=1064, Unknown=11, NotChecked=360, Total=1640 [2022-11-03 03:34:10,982 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 142 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 522 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:10,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 602 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 692 Invalid, 0 Unknown, 522 Unchecked, 0.7s Time] [2022-11-03 03:34:10,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-03 03:34:10,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-03 03:34:10,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 93 states have (on average 1.881720430107527) internal successors, (175), 164 states have internal predecessors, (175), 18 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 03:34:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 203 transitions. [2022-11-03 03:34:10,990 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 203 transitions. Word has length 25 [2022-11-03 03:34:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:10,991 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 203 transitions. [2022-11-03 03:34:10,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:34:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 203 transitions. [2022-11-03 03:34:10,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 03:34:10,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:10,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:11,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 03:34:11,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:11,213 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:34:11,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:11,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1564547254, now seen corresponding path program 1 times [2022-11-03 03:34:11,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:11,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975792098] [2022-11-03 03:34:11,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:11,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-03 03:34:12,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:12,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975792098] [2022-11-03 03:34:12,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975792098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:12,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:12,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:34:12,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407398835] [2022-11-03 03:34:12,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:12,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 03:34:12,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:12,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 03:34:12,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:34:12,221 INFO L87 Difference]: Start difference. First operand 179 states and 203 transitions. Second operand has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:34:13,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:13,167 INFO L93 Difference]: Finished difference Result 308 states and 352 transitions. [2022-11-03 03:34:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:34:13,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-03 03:34:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:13,171 INFO L225 Difference]: With dead ends: 308 [2022-11-03 03:34:13,171 INFO L226 Difference]: Without dead ends: 308 [2022-11-03 03:34:13,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:34:13,172 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 202 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:13,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 418 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:34:13,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-03 03:34:13,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 189. [2022-11-03 03:34:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 101 states have (on average 1.8316831683168318) internal successors, (185), 172 states have internal predecessors, (185), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 03:34:13,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 217 transitions. [2022-11-03 03:34:13,181 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 217 transitions. Word has length 25 [2022-11-03 03:34:13,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:13,181 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 217 transitions. [2022-11-03 03:34:13,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:34:13,182 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 217 transitions. [2022-11-03 03:34:13,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 03:34:13,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:13,183 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:13,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:34:13,183 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:34:13,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:13,184 INFO L85 PathProgramCache]: Analyzing trace with hash -70063146, now seen corresponding path program 1 times [2022-11-03 03:34:13,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:13,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182123471] [2022-11-03 03:34:13,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:13,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:34:13,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:13,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182123471] [2022-11-03 03:34:13,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182123471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:34:13,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167070706] [2022-11-03 03:34:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:13,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:13,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:13,790 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:34:13,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:34:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:13,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-03 03:34:13,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:34:14,042 INFO L356 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-11-03 03:34:14,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 26 treesize of output 27 [2022-11-03 03:34:14,083 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:34:14,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 03:34:14,196 WARN L833 $PredicateComparison]: unable to prove that (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (or (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse0 (select |c_#valid| .cse0))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse0 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp2#1.base|) 1)))) (and (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)))) is different from false [2022-11-03 03:34:14,198 WARN L855 $PredicateComparison]: unable to prove that (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (or (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse0 (select |c_#valid| .cse0))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse0 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp2#1.base|) 1)))) (and (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)))) is different from true [2022-11-03 03:34:14,302 WARN L833 $PredicateComparison]: unable to prove that (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (or (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (and (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse0 (select |c_#valid| .cse0))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse0 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)))) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1))) (and (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)) (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)))) is different from false [2022-11-03 03:34:14,305 WARN L855 $PredicateComparison]: unable to prove that (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (or (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (and (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse0 (select |c_#valid| .cse0))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse0 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)))) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1))) (and (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)) (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)))) is different from true [2022-11-03 03:34:14,343 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:34:14,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 03:34:14,535 WARN L833 $PredicateComparison]: unable to prove that (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (or (exists ((|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse0 (select |c_#valid| .cse0))) (<= (+ .cse0 1) |c_#StackHeapBarrier|) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (and (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse1 (select |v_#valid_BEFORE_CALL_18| .cse1)) |v_#valid_BEFORE_CALL_18|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse1 1) |c_#StackHeapBarrier|)))) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)))))) (exists ((|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse2 (select |c_#valid| .cse2))) (<= (+ .cse2 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1))))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (and (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse3 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse3 (select |c_#valid| .cse3))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse3 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)))) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1))) (and (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)) (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)))) is different from false [2022-11-03 03:34:14,541 WARN L855 $PredicateComparison]: unable to prove that (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (or (exists ((|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse0 (select |c_#valid| .cse0))) (<= (+ .cse0 1) |c_#StackHeapBarrier|) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (and (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse1 (select |v_#valid_BEFORE_CALL_18| .cse1)) |v_#valid_BEFORE_CALL_18|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse1 1) |c_#StackHeapBarrier|)))) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)))))) (exists ((|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse2 (select |c_#valid| .cse2))) (<= (+ .cse2 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1))))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (and (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse3 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse3 (select |c_#valid| .cse3))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse3 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)))) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1))) (and (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)) (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)))) is different from true [2022-11-03 03:34:14,850 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:34:14,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 03:34:17,325 WARN L833 $PredicateComparison]: unable to prove that (or (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_18| |v_#valid_BEFORE_CALL_20|)) (.cse0 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|)) (.cse1 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse0 (select |c_#valid| .cse0))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse1 (select |v_#valid_BEFORE_CALL_18| .cse1)) |v_#valid_BEFORE_CALL_18|) (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_18| .cse2 (select |v_#valid_BEFORE_CALL_20| .cse2))) (<= (+ 2 .cse2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse0 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (<= (+ 2 .cse1) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse3 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse3 (select |c_#valid| .cse3))) (<= (+ 2 .cse3) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse4 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_20|)) (.cse5 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_16| .cse4 (select |v_#valid_BEFORE_CALL_20| .cse4))) (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse5 (select |c_#valid| .cse5))) (= (select |v_#valid_BEFORE_CALL_20| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse4 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse5 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse7 (@diff |v_#valid_BEFORE_CALL_18| |v_#valid_BEFORE_CALL_20|)) (.cse6 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse6 (select |c_#valid| .cse6))) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_18| .cse7 (select |v_#valid_BEFORE_CALL_20| .cse7))) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ 2 .cse7) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (<= (+ .cse6 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse8 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|)) (.cse9 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse8 (select |c_#valid| .cse8))) (<= (+ 2 .cse8) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse9 (select |v_#valid_BEFORE_CALL_18| .cse9)) |v_#valid_BEFORE_CALL_18|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ 2 .cse9) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse10 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse10 (select |c_#valid| .cse10))) (= (select |v_#valid_BEFORE_CALL_20| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_20| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse10 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse11 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse11 (select |c_#valid| .cse11))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ 2 .cse11) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (and (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)) (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) is different from false [2022-11-03 03:34:23,599 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_18| |v_#valid_BEFORE_CALL_20|)) (.cse0 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|)) (.cse1 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse0 (select |c_#valid| .cse0))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse1 (select |v_#valid_BEFORE_CALL_18| .cse1)) |v_#valid_BEFORE_CALL_18|) (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_18| .cse2 (select |v_#valid_BEFORE_CALL_20| .cse2))) (<= (+ 2 .cse2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse0 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (<= (+ 2 .cse1) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse3 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse3 (select |c_#valid| .cse3))) (<= (+ 2 .cse3) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse4 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_20|)) (.cse5 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_16| .cse4 (select |v_#valid_BEFORE_CALL_20| .cse4))) (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse5 (select |c_#valid| .cse5))) (= (select |v_#valid_BEFORE_CALL_20| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse4 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse5 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse7 (@diff |v_#valid_BEFORE_CALL_18| |v_#valid_BEFORE_CALL_20|)) (.cse6 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse6 (select |c_#valid| .cse6))) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_18| .cse7 (select |v_#valid_BEFORE_CALL_20| .cse7))) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ 2 .cse7) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (<= (+ .cse6 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse8 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|)) (.cse9 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse8 (select |c_#valid| .cse8))) (<= (+ 2 .cse8) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse9 (select |v_#valid_BEFORE_CALL_18| .cse9)) |v_#valid_BEFORE_CALL_18|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ 2 .cse9) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse10 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse10 (select |c_#valid| .cse10))) (= (select |v_#valid_BEFORE_CALL_20| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_20| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse10 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse11 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse11 (select |c_#valid| .cse11))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ 2 .cse11) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (and (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)) (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) is different from true [2022-11-03 03:34:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 3 not checked. [2022-11-03 03:34:24,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:34:24,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167070706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:34:24,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1656091054] [2022-11-03 03:34:24,541 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-03 03:34:24,541 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:34:24,541 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:34:24,542 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:34:24,542 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:34:24,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:34:24,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,756 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:34:24,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:34:24,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:34:24,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:34:24,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:34:24,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:34:24,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:34:24,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:34:24,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:34:24,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:34:24,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:34:24,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,922 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:34:24,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:34:24,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:24,985 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:34:24,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:34:25,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:34:25,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,079 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:34:25,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:34:25,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,205 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:34:25,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:34:25,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:34:25,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:34:25,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:34:25,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,435 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:34:25,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:34:25,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:34:25,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:34:25,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:34:25,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:34:25,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:34:25,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:34:25,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,762 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:34:25,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:34:25,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:34:25,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:34:25,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:34:25,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:34:25,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:25,957 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:34:25,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:34:26,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:26,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:34:26,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:26,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:34:26,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:26,034 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:34:26,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:26,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:34:26,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:26,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:26,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:26,180 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:34:26,181 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:34:26,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:26,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:26,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:26,289 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:34:26,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:34:26,579 INFO L356 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-03 03:34:26,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 259 treesize of output 248 [2022-11-03 03:34:26,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:26,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:27,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:27,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:27,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:27,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:27,060 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:34:27,060 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:34:27,079 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-03 03:34:27,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:34:27,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:34:27,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:34:27,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:34:27,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:34:27,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:27,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:34:27,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:34:27,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:27,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:34:27,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:27,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:34:27,233 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:34:27,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:34:27,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:27,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:34:27,298 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:34:27,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:34:27,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:34:27,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:27,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:34:27,363 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:34:27,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:34:27,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:27,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:34:27,404 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:34:27,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:34:27,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:34:27,433 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:34:31,368 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4648#(and (= (select (store (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base| 1) |ULTIMATE.start_create_sll_~#list~0#1.base|) 0) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p2~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_main_~#p2~0#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_create_sll_~#list~0#1.base|) |ULTIMATE.start_create_sll_~#list~0#1.offset|) |ULTIMATE.start_create_sll_#t~mem9#1.offset|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (not (= (select |#valid| |ULTIMATE.start_create_sll_~pp1#1.base|) 1)) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base|) 0) (= |ULTIMATE.start_create_sll_~#list~0#1.offset| 0) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |ULTIMATE.start_main_~#p1~0#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p1~0#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.offset| |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select |#valid| |ULTIMATE.start_create_sll_~#list~0#1.base|) 1) (= |ULTIMATE.start_create_sll_~pp2#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base|) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_create_sll_~#list~0#1.base|) |ULTIMATE.start_create_sll_~#list~0#1.offset|) |ULTIMATE.start_create_sll_#t~mem9#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_create_sll_~#list~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_create_sll_~pp2#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (= |ULTIMATE.start_main_~#p2~0#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (<= (+ |ULTIMATE.start_create_sll_~#list~0#1.offset| 4) (select |#length| |ULTIMATE.start_create_sll_~#list~0#1.base|)) (< 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-03 03:34:31,368 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:34:31,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:34:31,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2022-11-03 03:34:31,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793396777] [2022-11-03 03:34:31,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:34:31,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:34:31,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:31,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:34:31,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=610, Unknown=8, NotChecked=212, Total=930 [2022-11-03 03:34:31,370 INFO L87 Difference]: Start difference. First operand 189 states and 217 transitions. Second operand has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 5 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-03 03:34:31,459 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp2#1.base|) 1)) (.cse1 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) .cse0 .cse1 (or (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse2 (select |c_#valid| .cse2))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse2 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp2#1.base|) 1)))) (and .cse0 .cse1)))) is different from false [2022-11-03 03:34:31,463 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp2#1.base|) 1)) (.cse1 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) .cse0 .cse1 (or (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse2 (select |c_#valid| .cse2))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse2 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp2#1.base|) 1)))) (and .cse0 .cse1)))) is different from true [2022-11-03 03:34:31,467 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (and (or (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (and (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_create_sll_~pp1#1.base|) .cse0)) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (or (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse1 (select |c_#valid| .cse1))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse1 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp2#1.base|) 1)))) (and (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp2#1.base|) 1) .cse0)))) is different from false [2022-11-03 03:34:31,471 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (and (or (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (and (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_create_sll_~pp1#1.base|) .cse0)) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (or (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse1 (select |c_#valid| .cse1))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse1 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp2#1.base|) 1)))) (and (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp2#1.base|) 1) .cse0)))) is different from true [2022-11-03 03:34:31,476 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (and (or (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (and (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_create_sll_~pp1#1.base|) .cse0)) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (or (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (and (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse1 (select |c_#valid| .cse1))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse1 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)))) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1))) (and (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)) .cse0)))) is different from false [2022-11-03 03:34:31,480 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (and (or (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (and (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_create_sll_~pp1#1.base|) .cse0)) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (or (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (and (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse1 (select |c_#valid| .cse1))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse1 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)))) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1))) (and (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)) .cse0)))) is different from true [2022-11-03 03:34:31,515 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (or (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|) .cse0) (or (exists ((|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse1 (select |c_#valid| .cse1))) (<= (+ .cse1 1) |c_#StackHeapBarrier|) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (and (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse2 (select |v_#valid_BEFORE_CALL_18| .cse2)) |v_#valid_BEFORE_CALL_18|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse2 1) |c_#StackHeapBarrier|)))) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)))))) (exists ((|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse3 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse3 (select |c_#valid| .cse3))) (<= (+ .cse3 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1))))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (and (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse4 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse4 (select |c_#valid| .cse4))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse4 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)))) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1))) (and (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)) .cse0)))) is different from false [2022-11-03 03:34:31,522 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (or (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|) .cse0) (or (exists ((|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse1 (select |c_#valid| .cse1))) (<= (+ .cse1 1) |c_#StackHeapBarrier|) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (and (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse2 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse2 (select |v_#valid_BEFORE_CALL_18| .cse2)) |v_#valid_BEFORE_CALL_18|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse2 1) |c_#StackHeapBarrier|)))) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)))))) (exists ((|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse3 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse3 (select |c_#valid| .cse3))) (<= (+ .cse3 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1))))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (and (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int))) (let ((.cse4 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse4 (select |c_#valid| .cse4))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse4 1) |c_#StackHeapBarrier|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)))) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1))) (and (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)) .cse0)))) is different from true [2022-11-03 03:34:33,595 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (and (or (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|) .cse0) (or (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse3 (@diff |v_#valid_BEFORE_CALL_18| |v_#valid_BEFORE_CALL_20|)) (.cse1 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|)) (.cse2 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse1 (select |c_#valid| .cse1))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse2 (select |v_#valid_BEFORE_CALL_18| .cse2)) |v_#valid_BEFORE_CALL_18|) (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_18| .cse3 (select |v_#valid_BEFORE_CALL_20| .cse3))) (<= (+ 2 .cse3) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse1 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (<= (+ 2 .cse2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse4 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse4 (select |c_#valid| .cse4))) (<= (+ 2 .cse4) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse5 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_20|)) (.cse6 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_16| .cse5 (select |v_#valid_BEFORE_CALL_20| .cse5))) (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse6 (select |c_#valid| .cse6))) (= (select |v_#valid_BEFORE_CALL_20| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse5 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse6 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse8 (@diff |v_#valid_BEFORE_CALL_18| |v_#valid_BEFORE_CALL_20|)) (.cse7 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse7 (select |c_#valid| .cse7))) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_18| .cse8 (select |v_#valid_BEFORE_CALL_20| .cse8))) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ 2 .cse8) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (<= (+ .cse7 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse9 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|)) (.cse10 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse9 (select |c_#valid| .cse9))) (<= (+ 2 .cse9) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse10 (select |v_#valid_BEFORE_CALL_18| .cse10)) |v_#valid_BEFORE_CALL_18|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ 2 .cse10) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse11 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse11 (select |c_#valid| .cse11))) (= (select |v_#valid_BEFORE_CALL_20| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_20| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse11 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse12 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse12 (select |c_#valid| .cse12))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ 2 .cse12) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (and (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)) .cse0)))) is different from false [2022-11-03 03:34:33,605 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (and (or (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|) .cse0) (or (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse3 (@diff |v_#valid_BEFORE_CALL_18| |v_#valid_BEFORE_CALL_20|)) (.cse1 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|)) (.cse2 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse1 (select |c_#valid| .cse1))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse2 (select |v_#valid_BEFORE_CALL_18| .cse2)) |v_#valid_BEFORE_CALL_18|) (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_18| .cse3 (select |v_#valid_BEFORE_CALL_20| .cse3))) (<= (+ 2 .cse3) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse1 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (<= (+ 2 .cse2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse4 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse4 (select |c_#valid| .cse4))) (<= (+ 2 .cse4) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse5 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_20|)) (.cse6 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_16| .cse5 (select |v_#valid_BEFORE_CALL_20| .cse5))) (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse6 (select |c_#valid| .cse6))) (= (select |v_#valid_BEFORE_CALL_20| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse5 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse6 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse8 (@diff |v_#valid_BEFORE_CALL_18| |v_#valid_BEFORE_CALL_20|)) (.cse7 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse7 (select |c_#valid| .cse7))) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_18| .cse8 (select |v_#valid_BEFORE_CALL_20| .cse8))) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ 2 .cse8) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (<= (+ .cse7 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse9 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|)) (.cse10 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse9 (select |c_#valid| .cse9))) (<= (+ 2 .cse9) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse10 (select |v_#valid_BEFORE_CALL_18| .cse10)) |v_#valid_BEFORE_CALL_18|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ 2 .cse10) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse11 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse11 (select |c_#valid| .cse11))) (= (select |v_#valid_BEFORE_CALL_20| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_20| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse11 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse12 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse12 (select |c_#valid| .cse12))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ 2 .cse12) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (and (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)) .cse0)))) is different from true [2022-11-03 03:34:35,628 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (and .cse0 (or (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse3 (@diff |v_#valid_BEFORE_CALL_18| |v_#valid_BEFORE_CALL_20|)) (.cse1 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|)) (.cse2 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse1 (select |c_#valid| .cse1))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse2 (select |v_#valid_BEFORE_CALL_18| .cse2)) |v_#valid_BEFORE_CALL_18|) (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_18| .cse3 (select |v_#valid_BEFORE_CALL_20| .cse3))) (<= (+ 2 .cse3) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse1 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (<= (+ 2 .cse2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse4 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse4 (select |c_#valid| .cse4))) (<= (+ 2 .cse4) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse5 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_20|)) (.cse6 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_16| .cse5 (select |v_#valid_BEFORE_CALL_20| .cse5))) (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse6 (select |c_#valid| .cse6))) (= (select |v_#valid_BEFORE_CALL_20| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse5 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse6 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse8 (@diff |v_#valid_BEFORE_CALL_18| |v_#valid_BEFORE_CALL_20|)) (.cse7 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse7 (select |c_#valid| .cse7))) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_18| .cse8 (select |v_#valid_BEFORE_CALL_20| .cse8))) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ 2 .cse8) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (<= (+ .cse7 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse9 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|)) (.cse10 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse9 (select |c_#valid| .cse9))) (<= (+ 2 .cse9) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse10 (select |v_#valid_BEFORE_CALL_18| .cse10)) |v_#valid_BEFORE_CALL_18|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ 2 .cse10) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse11 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse11 (select |c_#valid| .cse11))) (= (select |v_#valid_BEFORE_CALL_20| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_20| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse11 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse12 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse12 (select |c_#valid| .cse12))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ 2 .cse12) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (and (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)) .cse0)))) is different from false [2022-11-03 03:34:35,639 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1))) (and .cse0 (or (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse3 (@diff |v_#valid_BEFORE_CALL_18| |v_#valid_BEFORE_CALL_20|)) (.cse1 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|)) (.cse2 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse1 (select |c_#valid| .cse1))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse2 (select |v_#valid_BEFORE_CALL_18| .cse2)) |v_#valid_BEFORE_CALL_18|) (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_18| .cse3 (select |v_#valid_BEFORE_CALL_20| .cse3))) (<= (+ 2 .cse3) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse1 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (<= (+ 2 .cse2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse4 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse4 (select |c_#valid| .cse4))) (<= (+ 2 .cse4) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse5 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_20|)) (.cse6 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_16| .cse5 (select |v_#valid_BEFORE_CALL_20| .cse5))) (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse6 (select |c_#valid| .cse6))) (= (select |v_#valid_BEFORE_CALL_20| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse5 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ .cse6 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse8 (@diff |v_#valid_BEFORE_CALL_18| |v_#valid_BEFORE_CALL_20|)) (.cse7 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse7 (select |c_#valid| .cse7))) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= |v_#valid_BEFORE_CALL_20| (store |v_#valid_BEFORE_CALL_18| .cse8 (select |v_#valid_BEFORE_CALL_20| .cse8))) (= (select |v_#valid_BEFORE_CALL_18| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ 2 .cse8) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (<= (+ .cse7 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int) (|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|v_#valid_BEFORE_CALL_18| (Array Int Int))) (let ((.cse9 (@diff |v_#valid_BEFORE_CALL_18| |c_#valid|)) (.cse10 (@diff |v_#valid_BEFORE_CALL_16| |v_#valid_BEFORE_CALL_18|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_18| .cse9 (select |c_#valid| .cse9))) (<= (+ 2 .cse9) |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_18| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (store |v_#valid_BEFORE_CALL_16| .cse10 (select |v_#valid_BEFORE_CALL_18| .cse10)) |v_#valid_BEFORE_CALL_18|) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ 2 .cse10) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_20| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse11 (@diff |v_#valid_BEFORE_CALL_20| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_20| .cse11 (select |c_#valid| .cse11))) (= (select |v_#valid_BEFORE_CALL_20| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_20| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (<= (+ .cse11 2) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (exists ((|v_#valid_BEFORE_CALL_16| (Array Int Int)) (|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (let ((.cse12 (@diff |v_#valid_BEFORE_CALL_16| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_16| .cse12 (select |c_#valid| .cse12))) (= (select |v_#valid_BEFORE_CALL_16| |c_ULTIMATE.start_create_sll_~pp1#1.base|) 1) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (= (select |v_#valid_BEFORE_CALL_16| |ULTIMATE.start_create_sll_~pp2#1.base|) 1) (<= (+ 2 .cse12) |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (and (exists ((|ULTIMATE.start_create_sll_~pp2#1.base| Int)) (= (select |c_#valid| |ULTIMATE.start_create_sll_~pp2#1.base|) 1)) .cse0)))) is different from true [2022-11-03 03:34:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:36,537 INFO L93 Difference]: Finished difference Result 207 states and 239 transitions. [2022-11-03 03:34:36,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 03:34:36,538 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 5 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 35 [2022-11-03 03:34:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:36,540 INFO L225 Difference]: With dead ends: 207 [2022-11-03 03:34:36,540 INFO L226 Difference]: Without dead ends: 207 [2022-11-03 03:34:36,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=119, Invalid=657, Unknown=20, NotChecked=610, Total=1406 [2022-11-03 03:34:36,541 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 58 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 810 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:36,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 538 Invalid, 1650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 813 Invalid, 0 Unknown, 810 Unchecked, 1.0s Time] [2022-11-03 03:34:36,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-03 03:34:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 199. [2022-11-03 03:34:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 109 states have (on average 1.7798165137614679) internal successors, (194), 180 states have internal predecessors, (194), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 03:34:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 228 transitions. [2022-11-03 03:34:36,550 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 228 transitions. Word has length 35 [2022-11-03 03:34:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:36,551 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 228 transitions. [2022-11-03 03:34:36,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 5 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-03 03:34:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 228 transitions. [2022-11-03 03:34:36,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 03:34:36,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:36,553 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:36,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 03:34:36,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 03:34:36,769 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:34:36,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:36,770 INFO L85 PathProgramCache]: Analyzing trace with hash -70063145, now seen corresponding path program 1 times [2022-11-03 03:34:36,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:36,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545886512] [2022-11-03 03:34:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:36,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:37,823 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:34:37,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:37,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545886512] [2022-11-03 03:34:37,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545886512] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:34:37,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110947167] [2022-11-03 03:34:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:37,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:37,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:37,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:34:37,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:34:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:38,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 03:34:38,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:34:38,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:38,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:38,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:38,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 03:34:38,087 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:34:38,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2022-11-03 03:34:38,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:34:38,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:34:38,433 WARN L833 $PredicateComparison]: unable to prove that (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= |c_ULTIMATE.start_create_sll_~pp1#1.offset| 0) (or (<= 4 (select |c_#length| |c_ULTIMATE.start_create_sll_~pp1#1.base|)) (exists ((|v_#length_BEFORE_CALL_28| (Array Int Int))) (let ((.cse0 (@diff |v_#length_BEFORE_CALL_28| |c_#length|))) (and (= |c_#length| (store |v_#length_BEFORE_CALL_28| .cse0 (select |c_#length| .cse0))) (<= (+ .cse0 1) |c_#StackHeapBarrier|) (<= 4 (select |v_#length_BEFORE_CALL_28| |c_ULTIMATE.start_create_sll_~pp1#1.base|))))))) is different from false [2022-11-03 03:34:38,436 WARN L855 $PredicateComparison]: unable to prove that (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= |c_ULTIMATE.start_create_sll_~pp1#1.offset| 0) (or (<= 4 (select |c_#length| |c_ULTIMATE.start_create_sll_~pp1#1.base|)) (exists ((|v_#length_BEFORE_CALL_28| (Array Int Int))) (let ((.cse0 (@diff |v_#length_BEFORE_CALL_28| |c_#length|))) (and (= |c_#length| (store |v_#length_BEFORE_CALL_28| .cse0 (select |c_#length| .cse0))) (<= (+ .cse0 1) |c_#StackHeapBarrier|) (<= 4 (select |v_#length_BEFORE_CALL_28| |c_ULTIMATE.start_create_sll_~pp1#1.base|))))))) is different from true [2022-11-03 03:34:38,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:34:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 1 not checked. [2022-11-03 03:34:38,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:34:40,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110947167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:34:40,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [114364205] [2022-11-03 03:34:40,809 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-03 03:34:40,809 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:34:40,810 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:34:40,810 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:34:40,810 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:34:40,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:40,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:40,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:40,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:40,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:40,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:40,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:40,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:40,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:40,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:34:40,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:40,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:40,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:40,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:40,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:40,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:40,974 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:34:40,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:34:40,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:34:40,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:34:41,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:34:41,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:34:41,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:34:41,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:34:41,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:34:41,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:34:41,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,107 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:34:41,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:34:41,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:34:41,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,182 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:34:41,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:34:41,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,281 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:34:41,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:34:41,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,389 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:34:41,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:34:41,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:34:41,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:34:41,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:34:41,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:34:41,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,602 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:34:41,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:34:41,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:34:41,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:34:41,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:34:41,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:34:41,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:34:41,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:34:41,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,904 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:34:41,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:34:41,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:34:41,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,963 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:34:41,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:34:41,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:41,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:34:42,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:42,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:42,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:42,096 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:34:42,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:34:42,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:42,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:34:42,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:42,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:34:42,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:42,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:34:42,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:42,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:34:42,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:42,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:42,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:42,318 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:34:42,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:34:42,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:42,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:42,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:42,419 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:34:42,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:34:42,712 INFO L356 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-03 03:34:42,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 259 treesize of output 248 [2022-11-03 03:34:43,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:43,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:43,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:43,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:43,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:43,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:43,172 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:34:43,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:34:43,190 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-03 03:34:43,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:34:43,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:34:43,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:34:43,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:34:43,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:34:43,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:34:43,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:43,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:34:43,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:43,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:34:43,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:43,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:34:43,343 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:34:43,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:34:43,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:34:43,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:43,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:34:43,407 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:34:43,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:34:43,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:43,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:34:43,461 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:34:43,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:34:43,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:43,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:34:43,499 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:34:43,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:34:43,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:34:43,515 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:34:47,280 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5215#(and (= (select (store (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base| 1) |ULTIMATE.start_create_sll_~#list~0#1.base|) 0) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p2~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_main_~#p2~0#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_create_sll_~#list~0#1.base|) |ULTIMATE.start_create_sll_~#list~0#1.offset|) |ULTIMATE.start_create_sll_#t~mem9#1.offset|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (< (select |#length| |ULTIMATE.start_create_sll_~pp1#1.base|) (+ |ULTIMATE.start_create_sll_~pp1#1.offset| 4)) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base|) 0) (= |ULTIMATE.start_create_sll_~#list~0#1.offset| 0) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |ULTIMATE.start_main_~#p1~0#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p1~0#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.offset| |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select |#valid| |ULTIMATE.start_create_sll_~#list~0#1.base|) 1) (= |ULTIMATE.start_create_sll_~pp2#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base|) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_create_sll_~#list~0#1.base|) |ULTIMATE.start_create_sll_~#list~0#1.offset|) |ULTIMATE.start_create_sll_#t~mem9#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_create_sll_~#list~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_create_sll_~pp2#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (= |ULTIMATE.start_main_~#p2~0#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (<= (+ |ULTIMATE.start_create_sll_~#list~0#1.offset| 4) (select |#length| |ULTIMATE.start_create_sll_~#list~0#1.base|)) (< 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-03 03:34:47,280 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:34:47,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:34:47,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2022-11-03 03:34:47,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296407832] [2022-11-03 03:34:47,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:34:47,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:34:47,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:47,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:34:47,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=713, Unknown=2, NotChecked=54, Total=870 [2022-11-03 03:34:47,283 INFO L87 Difference]: Start difference. First operand 199 states and 228 transitions. Second operand has 15 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 03:34:47,498 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 4 (select |c_#length| |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= |c_ULTIMATE.start_create_sll_~pp1#1.offset| 0) (or .cse0 (exists ((|v_#length_BEFORE_CALL_28| (Array Int Int))) (let ((.cse1 (@diff |v_#length_BEFORE_CALL_28| |c_#length|))) (and (= |c_#length| (store |v_#length_BEFORE_CALL_28| .cse1 (select |c_#length| .cse1))) (<= (+ .cse1 1) |c_#StackHeapBarrier|) (<= 4 (select |v_#length_BEFORE_CALL_28| |c_ULTIMATE.start_create_sll_~pp1#1.base|)))))) .cse0 (or (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (and (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_create_sll_~pp1#1.base|) .cse0)) (= |c_ULTIMATE.start_create_sll_~pp2#1.offset| |c_ULTIMATE.start_create_sll_~pp1#1.offset|) (= |c_ULTIMATE.start_create_sll_~pp2#1.offset| 0))) is different from false [2022-11-03 03:34:47,501 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 4 (select |c_#length| |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= |c_ULTIMATE.start_create_sll_~pp1#1.offset| 0) (or .cse0 (exists ((|v_#length_BEFORE_CALL_28| (Array Int Int))) (let ((.cse1 (@diff |v_#length_BEFORE_CALL_28| |c_#length|))) (and (= |c_#length| (store |v_#length_BEFORE_CALL_28| .cse1 (select |c_#length| .cse1))) (<= (+ .cse1 1) |c_#StackHeapBarrier|) (<= 4 (select |v_#length_BEFORE_CALL_28| |c_ULTIMATE.start_create_sll_~pp1#1.base|)))))) .cse0 (or (= |c_ULTIMATE.start_create_sll_~#list~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (and (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_create_sll_~pp1#1.base|) .cse0)) (= |c_ULTIMATE.start_create_sll_~pp2#1.offset| |c_ULTIMATE.start_create_sll_~pp1#1.offset|) (= |c_ULTIMATE.start_create_sll_~pp2#1.offset| 0))) is different from true [2022-11-03 03:34:47,568 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 4 (select |c_#length| |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= |c_ULTIMATE.start_create_sll_~pp1#1.offset| 0) (or .cse0 (exists ((|v_#length_BEFORE_CALL_28| (Array Int Int))) (let ((.cse1 (@diff |v_#length_BEFORE_CALL_28| |c_#length|))) (and (= |c_#length| (store |v_#length_BEFORE_CALL_28| .cse1 (select |c_#length| .cse1))) (<= (+ .cse1 1) |c_#StackHeapBarrier|) (<= 4 (select |v_#length_BEFORE_CALL_28| |c_ULTIMATE.start_create_sll_~pp1#1.base|)))))) .cse0)) is different from false [2022-11-03 03:34:47,572 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 4 (select |c_#length| |c_ULTIMATE.start_create_sll_~pp1#1.base|)))) (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (= |c_ULTIMATE.start_create_sll_~pp1#1.offset| 0) (or .cse0 (exists ((|v_#length_BEFORE_CALL_28| (Array Int Int))) (let ((.cse1 (@diff |v_#length_BEFORE_CALL_28| |c_#length|))) (and (= |c_#length| (store |v_#length_BEFORE_CALL_28| .cse1 (select |c_#length| .cse1))) (<= (+ .cse1 1) |c_#StackHeapBarrier|) (<= 4 (select |v_#length_BEFORE_CALL_28| |c_ULTIMATE.start_create_sll_~pp1#1.base|)))))) .cse0)) is different from true [2022-11-03 03:34:48,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:48,680 INFO L93 Difference]: Finished difference Result 198 states and 226 transitions. [2022-11-03 03:34:48,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:34:48,681 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) Word has length 35 [2022-11-03 03:34:48,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:48,683 INFO L225 Difference]: With dead ends: 198 [2022-11-03 03:34:48,683 INFO L226 Difference]: Without dead ends: 198 [2022-11-03 03:34:48,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=122, Invalid=814, Unknown=6, NotChecked=180, Total=1122 [2022-11-03 03:34:48,684 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 417 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:48,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 505 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 967 Invalid, 0 Unknown, 195 Unchecked, 1.3s Time] [2022-11-03 03:34:48,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-03 03:34:48,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 193. [2022-11-03 03:34:48,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 105 states have (on average 1.7809523809523808) internal successors, (187), 175 states have internal predecessors, (187), 20 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 03:34:48,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 219 transitions. [2022-11-03 03:34:48,691 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 219 transitions. Word has length 35 [2022-11-03 03:34:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:48,691 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 219 transitions. [2022-11-03 03:34:48,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 03:34:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 219 transitions. [2022-11-03 03:34:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 03:34:48,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:48,693 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2022-11-03 03:34:48,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:34:48,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 03:34:48,909 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:34:48,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:48,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1534492665, now seen corresponding path program 1 times [2022-11-03 03:34:48,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:48,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290095734] [2022-11-03 03:34:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:48,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:34:49,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:49,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290095734] [2022-11-03 03:34:49,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290095734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:34:49,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672131086] [2022-11-03 03:34:49,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:49,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:49,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:49,541 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:34:49,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:34:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:49,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 03:34:49,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:34:49,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 12 [2022-11-03 03:34:49,942 INFO L356 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-11-03 03:34:49,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 16 [2022-11-03 03:34:49,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 03:34:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-03 03:34:49,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:34:49,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672131086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:49,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:34:49,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 10 [2022-11-03 03:34:49,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748474759] [2022-11-03 03:34:49,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:49,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:34:49,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:49,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:34:49,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:34:49,974 INFO L87 Difference]: Start difference. First operand 193 states and 219 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 03:34:50,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:50,556 INFO L93 Difference]: Finished difference Result 195 states and 222 transitions. [2022-11-03 03:34:50,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:34:50,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-11-03 03:34:50,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:50,559 INFO L225 Difference]: With dead ends: 195 [2022-11-03 03:34:50,559 INFO L226 Difference]: Without dead ends: 195 [2022-11-03 03:34:50,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:34:50,560 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 169 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:50,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 297 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 419 Invalid, 0 Unknown, 135 Unchecked, 0.5s Time] [2022-11-03 03:34:50,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-03 03:34:50,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 180. [2022-11-03 03:34:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 101 states have (on average 1.7227722772277227) internal successors, (174), 163 states have internal predecessors, (174), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 03:34:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions. [2022-11-03 03:34:50,567 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 38 [2022-11-03 03:34:50,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:50,567 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions. [2022-11-03 03:34:50,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 03:34:50,568 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions. [2022-11-03 03:34:50,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 03:34:50,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:50,569 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2022-11-03 03:34:50,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:34:50,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 03:34:50,787 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:34:50,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:50,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1534492664, now seen corresponding path program 1 times [2022-11-03 03:34:50,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:50,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919709455] [2022-11-03 03:34:50,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:50,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-03 03:34:51,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:51,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919709455] [2022-11-03 03:34:51,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919709455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:51,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:51,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:34:51,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529775409] [2022-11-03 03:34:51,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:51,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:34:51,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:51,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:34:51,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:34:51,214 INFO L87 Difference]: Start difference. First operand 180 states and 204 transitions. Second operand has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 03:34:52,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:52,148 INFO L93 Difference]: Finished difference Result 193 states and 223 transitions. [2022-11-03 03:34:52,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:34:52,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-11-03 03:34:52,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:52,150 INFO L225 Difference]: With dead ends: 193 [2022-11-03 03:34:52,150 INFO L226 Difference]: Without dead ends: 193 [2022-11-03 03:34:52,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:34:52,150 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 356 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:52,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 212 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:34:52,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-03 03:34:52,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 180. [2022-11-03 03:34:52,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 106 states have (on average 1.6415094339622642) internal successors, (174), 162 states have internal predecessors, (174), 20 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 03:34:52,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 206 transitions. [2022-11-03 03:34:52,158 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 206 transitions. Word has length 38 [2022-11-03 03:34:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:52,158 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 206 transitions. [2022-11-03 03:34:52,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 03:34:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 206 transitions. [2022-11-03 03:34:52,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 03:34:52,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:52,163 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2022-11-03 03:34:52,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:34:52,164 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:34:52,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:52,164 INFO L85 PathProgramCache]: Analyzing trace with hash -324632138, now seen corresponding path program 1 times [2022-11-03 03:34:52,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:52,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039062368] [2022-11-03 03:34:52,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:52,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:34:52,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:52,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039062368] [2022-11-03 03:34:52,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039062368] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:34:52,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194432171] [2022-11-03 03:34:52,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:52,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:52,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:52,760 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:34:52,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:34:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:53,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 03:34:53,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:34:53,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 42 [2022-11-03 03:34:53,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:34:53,235 WARN L833 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~#p2~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#p2~0#1.base|) (or (= (select |c_#valid| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1) (exists ((|v_#valid_BEFORE_CALL_52| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_52| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_52| .cse0 (select |c_#valid| .cse0))) (= (select |v_#valid_BEFORE_CALL_52| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1) (<= (+ .cse0 1) |c_#StackHeapBarrier|)))))) is different from false [2022-11-03 03:34:53,238 WARN L855 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~#p2~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#p2~0#1.base|) (or (= (select |c_#valid| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1) (exists ((|v_#valid_BEFORE_CALL_52| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_52| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_52| .cse0 (select |c_#valid| .cse0))) (= (select |v_#valid_BEFORE_CALL_52| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1) (<= (+ .cse0 1) |c_#StackHeapBarrier|)))))) is different from true [2022-11-03 03:34:53,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:34:53,427 WARN L833 $PredicateComparison]: unable to prove that (and (or (= (select |c_#valid| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1) (exists ((|v_#valid_BEFORE_CALL_54| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_54| |c_#valid|))) (and (<= (+ 2 .cse0) |c_ULTIMATE.start_main_~#p2~0#1.base|) (= |c_#valid| (store |v_#valid_BEFORE_CALL_54| .cse0 (select |c_#valid| .cse0))) (= (select |v_#valid_BEFORE_CALL_54| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1))))) (not (= |c_ULTIMATE.start_main_~#p2~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|))) is different from false [2022-11-03 03:34:53,430 WARN L855 $PredicateComparison]: unable to prove that (and (or (= (select |c_#valid| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1) (exists ((|v_#valid_BEFORE_CALL_54| (Array Int Int))) (let ((.cse0 (@diff |v_#valid_BEFORE_CALL_54| |c_#valid|))) (and (<= (+ 2 .cse0) |c_ULTIMATE.start_main_~#p2~0#1.base|) (= |c_#valid| (store |v_#valid_BEFORE_CALL_54| .cse0 (select |c_#valid| .cse0))) (= (select |v_#valid_BEFORE_CALL_54| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1))))) (not (= |c_ULTIMATE.start_main_~#p2~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|))) is different from true [2022-11-03 03:34:53,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 03:34:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-03 03:34:53,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:34:53,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194432171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:53,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:34:53,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2022-11-03 03:34:53,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951923762] [2022-11-03 03:34:53,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:53,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:34:53,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:53,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:34:53,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=84, Unknown=4, NotChecked=38, Total=156 [2022-11-03 03:34:53,470 INFO L87 Difference]: Start difference. First operand 180 states and 206 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 03:34:53,589 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1))) (and .cse0 (not (= |c_ULTIMATE.start_create_sll_~pp2#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (not (= |c_ULTIMATE.start_main_~#p2~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#p2~0#1.base|) (or .cse0 (exists ((|v_#valid_BEFORE_CALL_52| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_52| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_52| .cse1 (select |c_#valid| .cse1))) (= (select |v_#valid_BEFORE_CALL_52| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1) (<= (+ .cse1 1) |c_#StackHeapBarrier|))))) (= |c_ULTIMATE.start_create_sll_~pp2#1.base| |c_ULTIMATE.start_main_~#p2~0#1.base|))) is different from false [2022-11-03 03:34:53,593 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1))) (and .cse0 (not (= |c_ULTIMATE.start_create_sll_~pp2#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (not (= |c_ULTIMATE.start_main_~#p2~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#p2~0#1.base|) (or .cse0 (exists ((|v_#valid_BEFORE_CALL_52| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_52| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_52| .cse1 (select |c_#valid| .cse1))) (= (select |v_#valid_BEFORE_CALL_52| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1) (<= (+ .cse1 1) |c_#StackHeapBarrier|))))) (= |c_ULTIMATE.start_create_sll_~pp2#1.base| |c_ULTIMATE.start_main_~#p2~0#1.base|))) is different from true [2022-11-03 03:34:53,627 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1))) (and .cse0 (not (= |c_ULTIMATE.start_main_~#p2~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#p2~0#1.base|) (or .cse0 (exists ((|v_#valid_BEFORE_CALL_52| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_52| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_52| .cse1 (select |c_#valid| .cse1))) (= (select |v_#valid_BEFORE_CALL_52| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1) (<= (+ .cse1 1) |c_#StackHeapBarrier|))))))) is different from false [2022-11-03 03:34:53,631 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1))) (and .cse0 (not (= |c_ULTIMATE.start_main_~#p2~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#p2~0#1.base|) (or .cse0 (exists ((|v_#valid_BEFORE_CALL_52| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_52| |c_#valid|))) (and (= |c_#valid| (store |v_#valid_BEFORE_CALL_52| .cse1 (select |c_#valid| .cse1))) (= (select |v_#valid_BEFORE_CALL_52| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1) (<= (+ .cse1 1) |c_#StackHeapBarrier|))))))) is different from true [2022-11-03 03:34:53,644 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1))) (and (or .cse0 (exists ((|v_#valid_BEFORE_CALL_54| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_54| |c_#valid|))) (and (<= (+ 2 .cse1) |c_ULTIMATE.start_main_~#p2~0#1.base|) (= |c_#valid| (store |v_#valid_BEFORE_CALL_54| .cse1 (select |c_#valid| .cse1))) (= (select |v_#valid_BEFORE_CALL_54| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1))))) .cse0 (not (= |c_ULTIMATE.start_main_~#p2~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#p2~0#1.base|))) is different from false [2022-11-03 03:34:53,648 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1))) (and (or .cse0 (exists ((|v_#valid_BEFORE_CALL_54| (Array Int Int))) (let ((.cse1 (@diff |v_#valid_BEFORE_CALL_54| |c_#valid|))) (and (<= (+ 2 .cse1) |c_ULTIMATE.start_main_~#p2~0#1.base|) (= |c_#valid| (store |v_#valid_BEFORE_CALL_54| .cse1 (select |c_#valid| .cse1))) (= (select |v_#valid_BEFORE_CALL_54| |c_ULTIMATE.start_main_~#p2~0#1.base|) 1))))) .cse0 (not (= |c_ULTIMATE.start_main_~#p2~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#p2~0#1.base|))) is different from true [2022-11-03 03:34:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:54,241 INFO L93 Difference]: Finished difference Result 191 states and 221 transitions. [2022-11-03 03:34:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:34:54,242 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-11-03 03:34:54,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:54,243 INFO L225 Difference]: With dead ends: 191 [2022-11-03 03:34:54,243 INFO L226 Difference]: Without dead ends: 191 [2022-11-03 03:34:54,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=100, Unknown=10, NotChecked=120, Total=272 [2022-11-03 03:34:54,244 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 138 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 384 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:54,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 301 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 612 Invalid, 0 Unknown, 384 Unchecked, 0.7s Time] [2022-11-03 03:34:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-03 03:34:54,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 175. [2022-11-03 03:34:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 107 states have (on average 1.588785046728972) internal successors, (170), 157 states have internal predecessors, (170), 20 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 03:34:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 202 transitions. [2022-11-03 03:34:54,250 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 202 transitions. Word has length 39 [2022-11-03 03:34:54,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:54,250 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 202 transitions. [2022-11-03 03:34:54,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 03:34:54,251 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 202 transitions. [2022-11-03 03:34:54,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 03:34:54,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:54,252 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2022-11-03 03:34:54,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:34:54,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 03:34:54,466 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:34:54,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:54,467 INFO L85 PathProgramCache]: Analyzing trace with hash -324632137, now seen corresponding path program 1 times [2022-11-03 03:34:54,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:54,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505131915] [2022-11-03 03:34:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:54,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:34:55,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:55,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505131915] [2022-11-03 03:34:55,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505131915] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:34:55,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192865709] [2022-11-03 03:34:55,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:55,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:55,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:55,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:34:55,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:34:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:55,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 03:34:55,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:34:55,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:55,499 INFO L356 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-11-03 03:34:55,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 23 [2022-11-03 03:34:55,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 42 [2022-11-03 03:34:55,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:34:57,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:57,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 03:34:57,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:34:57,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:34:58,079 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~#p2~0#1.offset| 0) (or (exists ((|v_#length_BEFORE_CALL_50| (Array Int Int))) (let ((.cse0 (@diff |v_#length_BEFORE_CALL_50| |c_#length|))) (and (<= (+ 2 .cse0) |c_ULTIMATE.start_main_~#p2~0#1.base|) (<= 4 (select |v_#length_BEFORE_CALL_50| |c_ULTIMATE.start_main_~#p2~0#1.base|)) (= (store |v_#length_BEFORE_CALL_50| .cse0 (select |c_#length| .cse0)) |c_#length|)))) (<= 4 (select |c_#length| |c_ULTIMATE.start_main_~#p2~0#1.base|)))) is different from false [2022-11-03 03:34:58,082 WARN L855 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~#p2~0#1.offset| 0) (or (exists ((|v_#length_BEFORE_CALL_50| (Array Int Int))) (let ((.cse0 (@diff |v_#length_BEFORE_CALL_50| |c_#length|))) (and (<= (+ 2 .cse0) |c_ULTIMATE.start_main_~#p2~0#1.base|) (<= 4 (select |v_#length_BEFORE_CALL_50| |c_ULTIMATE.start_main_~#p2~0#1.base|)) (= (store |v_#length_BEFORE_CALL_50| .cse0 (select |c_#length| .cse0)) |c_#length|)))) (<= 4 (select |c_#length| |c_ULTIMATE.start_main_~#p2~0#1.base|)))) is different from true [2022-11-03 03:34:58,135 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 12 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:34:58,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:34:58,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192865709] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:34:58,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1472424536] [2022-11-03 03:34:58,312 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-03 03:34:58,313 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:34:58,313 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:34:58,313 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:34:58,313 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:34:58,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:34:58,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,477 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:34:58,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:34:58,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:34:58,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:34:58,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:34:58,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:34:58,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:34:58,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:34:58,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:34:58,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:34:58,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,609 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:34:58,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:34:58,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:34:58,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,669 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:34:58,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:34:58,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,773 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:34:58,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:34:58,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,851 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:34:58,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:34:58,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:34:58,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:34:58,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:34:58,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:34:58,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:58,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,044 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:34:59,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:34:59,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:34:59,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:34:59,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:34:59,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:34:59,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:34:59,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:34:59,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,320 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:34:59,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:34:59,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:34:59,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:34:59,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:34:59,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:34:59,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,481 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:34:59,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:34:59,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:34:59,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:34:59,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:34:59,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:34:59,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:34:59,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:34:59,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:34:59,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,777 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:34:59,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:34:59,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:34:59,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:34:59,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:34:59,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:34:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,934 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:34:59,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:34:59,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:34:59,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:34:59,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:00,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:00,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:35:00,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:35:00,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,295 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:35:00,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:35:00,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,395 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:35:00,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:35:00,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,515 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:35:00,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:35:00,536 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-03 03:35:00,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:35:00,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:35:00,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:35:00,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:00,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:00,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:35:00,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:35:00,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:35:00,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:00,680 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:35:00,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:35:00,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:35:00,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:00,740 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:35:00,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:35:00,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:00,787 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:35:00,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:35:00,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:00,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:00,816 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:35:00,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:35:00,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:35:00,833 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:35:06,416 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7166#(and (= |ULTIMATE.start_create_sll_#res#1.offset| |ULTIMATE.start_main_~list~1#1.offset|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p2~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_main_~#p2~0#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |#valid| |ULTIMATE.start_main_~#p1~0#1.base|) 1) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base|) 0) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (<= (+ |ULTIMATE.start_main_~#p1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#p1~0#1.base|)) (= |ULTIMATE.start_main_~#p1~0#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p1~0#1.base|) (= |ULTIMATE.start_main_#t~mem21#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|)) (= |ULTIMATE.start_create_sll_~pp1#1.offset| |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= |ULTIMATE.start_create_sll_~pp2#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (= |#NULL.offset| 0) (< (select |#length| |ULTIMATE.start_main_~#p2~0#1.base|) (+ |ULTIMATE.start_main_~#p2~0#1.offset| 4)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) |ULTIMATE.start_main_#t~mem21#1.offset|) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base|) 0) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_create_sll_~pp2#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (= |ULTIMATE.start_create_sll_#res#1.base| |ULTIMATE.start_main_~list~1#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (= |ULTIMATE.start_main_~#p2~0#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_32| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_32| 0)) (= (select (store (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base| 1) |v_ULTIMATE.start_create_sll_~#list~0#1.base_32|) 0) (= 0 (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_32|)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_32|) (= |ULTIMATE.start_create_sll_#res#1.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~#list~0#1.base_32|) 0)) (= |ULTIMATE.start_create_sll_#res#1.offset| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~#list~0#1.base_32|) 0)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_32|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_32|)))) (< 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-03 03:35:06,417 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:35:06,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:35:06,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2022-11-03 03:35:06,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232914362] [2022-11-03 03:35:06,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:35:06,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 03:35:06,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:06,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 03:35:06,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1112, Unknown=3, NotChecked=68, Total=1332 [2022-11-03 03:35:06,419 INFO L87 Difference]: Start difference. First operand 175 states and 202 transitions. Second operand has 17 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-03 03:35:06,756 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (<= 4 (select |c_#length| |c_ULTIMATE.start_main_~#p2~0#1.base|)))) (and (= |c_ULTIMATE.start_main_~#p2~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#p2~0#1.offset| |c_ULTIMATE.start_create_sll_~pp2#1.offset|) (or (exists ((|v_#length_BEFORE_CALL_50| (Array Int Int))) (let ((.cse0 (@diff |v_#length_BEFORE_CALL_50| |c_#length|))) (and (<= (+ 2 .cse0) |c_ULTIMATE.start_main_~#p2~0#1.base|) (<= 4 (select |v_#length_BEFORE_CALL_50| |c_ULTIMATE.start_main_~#p2~0#1.base|)) (= (store |v_#length_BEFORE_CALL_50| .cse0 (select |c_#length| .cse0)) |c_#length|)))) .cse1) (not (= |c_ULTIMATE.start_main_~#p2~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#p2~0#1.base|) (= |c_ULTIMATE.start_create_sll_~pp2#1.base| |c_ULTIMATE.start_main_~#p2~0#1.base|) (= |c_ULTIMATE.start_create_sll_~pp2#1.offset| 0) .cse1 (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#p2~0#1.base|))) is different from false [2022-11-03 03:35:06,760 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 (<= 4 (select |c_#length| |c_ULTIMATE.start_main_~#p2~0#1.base|)))) (and (= |c_ULTIMATE.start_main_~#p2~0#1.offset| 0) (= |c_ULTIMATE.start_main_~#p2~0#1.offset| |c_ULTIMATE.start_create_sll_~pp2#1.offset|) (or (exists ((|v_#length_BEFORE_CALL_50| (Array Int Int))) (let ((.cse0 (@diff |v_#length_BEFORE_CALL_50| |c_#length|))) (and (<= (+ 2 .cse0) |c_ULTIMATE.start_main_~#p2~0#1.base|) (<= 4 (select |v_#length_BEFORE_CALL_50| |c_ULTIMATE.start_main_~#p2~0#1.base|)) (= (store |v_#length_BEFORE_CALL_50| .cse0 (select |c_#length| .cse0)) |c_#length|)))) .cse1) (not (= |c_ULTIMATE.start_main_~#p2~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#p2~0#1.base|) (= |c_ULTIMATE.start_create_sll_~pp2#1.base| |c_ULTIMATE.start_main_~#p2~0#1.base|) (= |c_ULTIMATE.start_create_sll_~pp2#1.offset| 0) .cse1 (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#p2~0#1.base|))) is different from true [2022-11-03 03:35:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:07,833 INFO L93 Difference]: Finished difference Result 251 states and 292 transitions. [2022-11-03 03:35:07,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:35:07,833 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2022-11-03 03:35:07,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:07,835 INFO L225 Difference]: With dead ends: 251 [2022-11-03 03:35:07,835 INFO L226 Difference]: Without dead ends: 251 [2022-11-03 03:35:07,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=182, Invalid=1303, Unknown=5, NotChecked=150, Total=1640 [2022-11-03 03:35:07,836 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 317 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:07,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 529 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1006 Invalid, 0 Unknown, 345 Unchecked, 1.2s Time] [2022-11-03 03:35:07,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-03 03:35:07,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 169. [2022-11-03 03:35:07,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 107 states have (on average 1.5233644859813085) internal successors, (163), 151 states have internal predecessors, (163), 20 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 03:35:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 195 transitions. [2022-11-03 03:35:07,843 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 195 transitions. Word has length 39 [2022-11-03 03:35:07,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:07,844 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 195 transitions. [2022-11-03 03:35:07,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-03 03:35:07,844 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 195 transitions. [2022-11-03 03:35:07,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 03:35:07,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:07,845 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:07,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:08,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 03:35:08,077 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:35:08,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:08,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2086695555, now seen corresponding path program 1 times [2022-11-03 03:35:08,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:08,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068787693] [2022-11-03 03:35:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:08,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:35:11,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:11,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068787693] [2022-11-03 03:35:11,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068787693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:11,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640308510] [2022-11-03 03:35:11,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:11,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:11,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:11,409 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:11,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:35:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:11,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-03 03:35:11,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:11,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:12,235 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:35:12,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-11-03 03:35:12,327 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:35:12,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 8 [2022-11-03 03:35:12,763 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1730 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_1729 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1729) |c_chain_node_#in~ppnode#1.base| v_ArrVal_1730)))) is different from true [2022-11-03 03:35:12,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:12,833 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-03 03:35:12,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 45 [2022-11-03 03:35:12,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:12,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:13,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:35:13,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 8 [2022-11-03 03:35:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-03 03:35:13,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:35:13,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:13,527 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_1741 (Array Int Int)) (v_ArrVal_1740 (Array Int Int)) (|v_chain_node_~node~0#1.base_28| Int)) (or (not (< |v_chain_node_~node~0#1.base_28| |c_#StackHeapBarrier|)) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_28| v_ArrVal_1741) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_1740) |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|) 0)))) (= |c_ULTIMATE.start_main_~#p1~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|)) is different from false [2022-11-03 03:35:13,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640308510] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:13,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1317879007] [2022-11-03 03:35:13,531 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-03 03:35:13,531 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:35:13,532 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:35:13,532 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:35:13,532 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:35:13,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:35:13,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,734 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:35:13,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:35:13,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:35:13,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:35:13,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:13,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:13,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:35:13,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:35:13,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:35:13,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:35:13,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,873 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:35:13,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:35:13,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:13,923 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:35:13,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:35:13,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:35:13,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:35:13,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,035 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:35:14,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:35:14,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,105 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:35:14,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:35:14,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:35:14,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:35:14,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:35:14,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,282 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:35:14,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:35:14,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:35:14,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:35:14,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:35:14,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:35:14,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:35:14,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:35:14,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,570 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:35:14,571 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:35:14,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:35:14,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:14,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:35:14,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:14,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,767 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:35:14,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:35:14,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:14,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:35:14,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:35:14,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:14,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:35:14,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:14,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:35:14,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:35:15,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,068 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:35:15,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:35:15,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:15,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:35:15,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:35:15,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:15,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,246 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:35:15,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:35:15,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:35:15,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:15,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:35:15,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:15,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:35:15,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,640 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 03:35:15,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 03:35:15,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,750 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:35:15,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:35:15,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,855 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:35:15,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:35:15,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:15,978 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:35:15,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:35:15,996 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-03 03:35:16,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:35:16,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:35:16,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:16,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:35:16,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:16,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:16,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:35:16,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:16,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:35:16,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:35:16,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:35:16,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:16,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:16,168 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:35:16,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:35:16,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:16,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:16,220 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:35:16,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:35:16,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:16,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:16,274 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:35:16,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:35:16,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:35:16,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:16,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:16,320 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:35:16,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:35:16,328 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-03 03:35:16,387 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 60 for LOIs [2022-11-03 03:35:16,400 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:35:24,910 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7827#(and (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_36| Int)) (and (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_36|)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_36|)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_36|) (= 0 (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_36|)) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_36| 0)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_36|))) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_41| Int) (|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_50| Int)) (and (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_41|) 1) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_41|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_41|)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_41| 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_50| 0)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_41| 2)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_50|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_50|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_50|) 0) 0) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_41|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_50| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_41|)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_50|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_50|) 1) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_50|) 0) 0) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_50| 2)))) (= |#NULL.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:35:24,910 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:35:24,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:35:24,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 20] total 46 [2022-11-03 03:35:24,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990512155] [2022-11-03 03:35:24,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:35:24,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-03 03:35:24,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:24,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-03 03:35:24,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=4549, Unknown=20, NotChecked=274, Total=5112 [2022-11-03 03:35:24,914 INFO L87 Difference]: Start difference. First operand 169 states and 195 transitions. Second operand has 46 states, 37 states have (on average 1.864864864864865) internal successors, (69), 43 states have internal predecessors, (69), 7 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-03 03:35:29,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:29,599 INFO L93 Difference]: Finished difference Result 200 states and 233 transitions. [2022-11-03 03:35:29,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 03:35:29,600 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 37 states have (on average 1.864864864864865) internal successors, (69), 43 states have internal predecessors, (69), 7 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 44 [2022-11-03 03:35:29,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:29,601 INFO L225 Difference]: With dead ends: 200 [2022-11-03 03:35:29,601 INFO L226 Difference]: Without dead ends: 200 [2022-11-03 03:35:29,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2230 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=496, Invalid=7142, Unknown=26, NotChecked=346, Total=8010 [2022-11-03 03:35:29,604 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 250 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 2785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 357 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:29,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1777 Invalid, 2785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2292 Invalid, 0 Unknown, 357 Unchecked, 2.6s Time] [2022-11-03 03:35:29,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-03 03:35:29,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 181. [2022-11-03 03:35:29,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 117 states have (on average 1.5384615384615385) internal successors, (180), 162 states have internal predecessors, (180), 21 states have call successors, (21), 6 states have call predecessors, (21), 5 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 03:35:29,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 214 transitions. [2022-11-03 03:35:29,612 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 214 transitions. Word has length 44 [2022-11-03 03:35:29,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:29,612 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 214 transitions. [2022-11-03 03:35:29,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 37 states have (on average 1.864864864864865) internal successors, (69), 43 states have internal predecessors, (69), 7 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-03 03:35:29,613 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 214 transitions. [2022-11-03 03:35:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 03:35:29,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:29,614 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:29,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:29,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 03:35:29,829 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:35:29,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:29,829 INFO L85 PathProgramCache]: Analyzing trace with hash -446223091, now seen corresponding path program 1 times [2022-11-03 03:35:29,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:29,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392235045] [2022-11-03 03:35:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:29,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 03:35:32,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:32,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392235045] [2022-11-03 03:35:32,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392235045] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:32,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581347140] [2022-11-03 03:35:32,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:32,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:32,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:32,194 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:32,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 03:35:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:32,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-03 03:35:32,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:32,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:32,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:32,811 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:35:32,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-11-03 03:35:32,942 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:35:32,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 8 [2022-11-03 03:35:33,385 WARN L855 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_1948 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1948))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|))) |c_#memory_$Pointer$.base|) (not (= |chain_node_~node~0#1.base| 0)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-03 03:35:33,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:33,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:33,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:33,446 INFO L356 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-03 03:35:33,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 44 [2022-11-03 03:35:33,463 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 03:35:33,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 03:35:33,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 16 treesize of output 13 [2022-11-03 03:35:33,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-03 03:35:33,761 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-03 03:35:33,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 43 [2022-11-03 03:35:33,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 12 [2022-11-03 03:35:33,908 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:35:33,909 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 37 treesize of output 29 [2022-11-03 03:35:34,400 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1954 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_1957 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_1954 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1954) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_1957) |c_#memory_$Pointer$.base|))) is different from true [2022-11-03 03:35:34,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:34,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:34,481 INFO L356 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2022-11-03 03:35:34,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 53 treesize of output 64 [2022-11-03 03:35:34,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-03 03:35:34,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:34,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 45 treesize of output 37 [2022-11-03 03:35:34,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 21 [2022-11-03 03:35:34,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 9 treesize of output 7 [2022-11-03 03:35:34,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 45 treesize of output 37 [2022-11-03 03:35:35,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:35:35,629 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:35:35,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 41 treesize of output 29 [2022-11-03 03:35:35,656 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-03 03:35:35,656 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-03 03:35:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-03 03:35:35,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:35:35,850 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:35:35,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 15 [2022-11-03 03:35:36,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581347140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:36,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1291316960] [2022-11-03 03:35:36,230 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-03 03:35:36,230 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:35:36,231 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:35:36,231 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:35:36,231 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:35:36,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:35:36,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,376 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:35:36,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:35:36,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:35:36,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:35:36,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:36,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:35:36,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:36,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:35:36,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:35:36,468 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:35:36,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,526 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:35:36,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:35:36,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,580 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:35:36,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:35:36,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:35:36,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,691 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:35:36,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:35:36,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,786 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:35:36,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:35:36,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:35:36,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:35:36,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:35:36,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:35:36,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:36,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,002 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:35:37,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:35:37,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:35:37,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:35:37,099 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:35:37,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:35:37,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:35:37,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:35:37,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,305 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:35:37,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:35:37,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:35:37,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:37,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:37,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:35:37,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,471 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:35:37,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:35:37,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:35:37,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:37,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:37,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:35:37,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:35:37,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:35:37,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:35:37,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,791 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:35:37,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:35:37,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:35:37,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:37,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:35:37,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:37,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:37,963 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:35:37,963 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:35:38,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:38,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:35:38,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:35:38,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:35:38,112 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:35:38,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,305 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 03:35:38,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 03:35:38,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,393 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:35:38,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:35:38,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,479 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:35:38,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:35:38,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,584 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:35:38,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:35:38,604 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-03 03:35:38,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:35:38,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:35:38,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:38,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:35:38,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:35:38,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:35:38,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:35:38,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:35:38,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:38,734 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:35:38,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:35:38,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:35:38,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:38,791 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:35:38,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:35:38,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,820 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:38,835 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:35:38,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:35:38,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:35:38,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:38,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:35:38,879 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:35:38,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:35:38,887 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-03 03:35:39,010 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 75 for LOIs [2022-11-03 03:35:39,039 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:35:48,269 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8491#(and (or (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52| Int)) (and (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52| 2)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52|)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52|) 0) 0) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52|) 1) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52| 0)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52|) 0) 0) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62| Int)) (and (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62|) 1) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62|) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62|) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62|) 0) 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62| 0)))))) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52| Int)) (and (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62| Int)) (and (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62|) 1) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62|) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62| 2)) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62|) 0) 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_62| 0)))) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52| 2)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52|)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52|) 0) 0) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52|) 1) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52| 0)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_52|) 0) 0)))) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_40| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_40| 0)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_40|) (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_40|)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_40|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_40|) 0) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_40|))) (= |#NULL.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:35:48,270 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:35:48,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:35:48,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 29] total 42 [2022-11-03 03:35:48,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715572200] [2022-11-03 03:35:48,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:35:48,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-03 03:35:48,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:48,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-03 03:35:48,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=4262, Unknown=20, NotChecked=266, Total=4830 [2022-11-03 03:35:48,273 INFO L87 Difference]: Start difference. First operand 181 states and 214 transitions. Second operand has 42 states, 32 states have (on average 1.96875) internal successors, (63), 38 states have internal predecessors, (63), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 03:35:51,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:51,710 INFO L93 Difference]: Finished difference Result 217 states and 254 transitions. [2022-11-03 03:35:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 03:35:51,711 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 32 states have (on average 1.96875) internal successors, (63), 38 states have internal predecessors, (63), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 46 [2022-11-03 03:35:51,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:51,713 INFO L225 Difference]: With dead ends: 217 [2022-11-03 03:35:51,713 INFO L226 Difference]: Without dead ends: 217 [2022-11-03 03:35:51,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2247 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=444, Invalid=6840, Unknown=34, NotChecked=338, Total=7656 [2022-11-03 03:35:51,715 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 163 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 915 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:51,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1577 Invalid, 2392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1419 Invalid, 0 Unknown, 915 Unchecked, 1.5s Time] [2022-11-03 03:35:51,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-03 03:35:51,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 200. [2022-11-03 03:35:51,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 131 states have (on average 1.4961832061068703) internal successors, (196), 177 states have internal predecessors, (196), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-03 03:35:51,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 238 transitions. [2022-11-03 03:35:51,723 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 238 transitions. Word has length 46 [2022-11-03 03:35:51,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:51,724 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 238 transitions. [2022-11-03 03:35:51,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 32 states have (on average 1.96875) internal successors, (63), 38 states have internal predecessors, (63), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 03:35:51,724 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 238 transitions. [2022-11-03 03:35:51,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 03:35:51,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:51,725 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:51,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-03 03:35:51,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:51,941 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:35:51,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:51,941 INFO L85 PathProgramCache]: Analyzing trace with hash -446234027, now seen corresponding path program 1 times [2022-11-03 03:35:51,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:51,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550759510] [2022-11-03 03:35:51,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:51,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:53,888 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:35:53,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:53,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550759510] [2022-11-03 03:35:53,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550759510] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:35:53,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252668143] [2022-11-03 03:35:53,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:53,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:53,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:53,892 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:53,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 03:35:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:54,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-03 03:35:54,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:54,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:35:54,611 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-03 03:35:54,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 15 [2022-11-03 03:35:54,867 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:35:54,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2022-11-03 03:35:54,950 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:35:54,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 [2022-11-03 03:35:56,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:35:56,619 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-03 03:35:56,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 52 [2022-11-03 03:35:56,644 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-03 03:35:56,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 03:35:56,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 15 [2022-11-03 03:35:56,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2022-11-03 03:35:57,512 INFO L356 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2022-11-03 03:35:57,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 51 [2022-11-03 03:35:57,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:06,768 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:36:06,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:36:07,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252668143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:36:07,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1547356355] [2022-11-03 03:36:07,172 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-03 03:36:07,172 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:36:07,172 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:36:07,172 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:36:07,172 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:36:07,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:36:07,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,305 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:36:07,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:36:07,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:36:07,345 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:36:07,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:36:07,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:07,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:07,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:36:07,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:36:07,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:36:07,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,446 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:36:07,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:36:07,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:07,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,503 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:36:07,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:36:07,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:07,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,598 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:36:07,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:36:07,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,669 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:36:07,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:36:07,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:36:07,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:36:07,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:36:07,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,841 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:36:07,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:36:07,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:36:07,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:36:07,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:36:07,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:36:07,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:07,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:36:08,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:08,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,104 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:08,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:08,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:36:08,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:08,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:08,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:36:08,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,311 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:08,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:08,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:08,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:08,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:36:08,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:36:08,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:08,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:36:08,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:36:08,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,645 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:08,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:08,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:08,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:08,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:36:08,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:36:08,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,823 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:08,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:08,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:36:08,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:36:08,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,893 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:08,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:08,909 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:08,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:36:09,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,149 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 03:36:09,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 03:36:09,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,252 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:09,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:09,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,340 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:09,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:09,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,453 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:36:09,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:36:09,472 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-03 03:36:09,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:36:09,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:36:09,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:09,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:36:09,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:09,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:36:09,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:36:09,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:36:09,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:09,621 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:36:09,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:36:09,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:09,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:09,688 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:36:09,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:36:09,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:09,741 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:36:09,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:36:09,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:09,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:09,780 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:36:09,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:36:09,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:09,797 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-03 03:36:09,909 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:36:19,077 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9192#(and (= check_seq_next_~end.offset |check_seq_next_#in~end.offset|) (= check_seq_next_~beg.offset |check_seq_next_#in~beg.offset|) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_44| Int)) (and (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_44|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_44|) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_44| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_44|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_44|) 0) (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_44|)))) (= check_seq_next_~beg.base |check_seq_next_#in~beg.base|) (or (not (= check_seq_next_~end.offset 0)) (not (= check_seq_next_~end.base 0))) (= check_seq_next_~end.base |check_seq_next_#in~end.base|) (or (not (= check_seq_next_~beg.offset 0)) (not (= check_seq_next_~beg.base 0))) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_62| Int) (|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_74| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_74| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_62|)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_62| 0)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_62|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_74|) 0) |check_seq_next_#in~beg.base|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_74| 2)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_62|)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_62| 2)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_74|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_74|) 1) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_62|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_74| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_74|)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_62|) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_74|) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_74|) 0) |check_seq_next_#in~beg.offset|) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_62|) 0) |check_seq_next_#in~end.offset|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_62|) 0) |check_seq_next_#in~end.base|))) (= |#NULL.offset| 0) (not (= (select |#valid| check_seq_next_~beg.base) 1)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:36:19,077 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:36:19,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:36:19,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24] total 40 [2022-11-03 03:36:19,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107461505] [2022-11-03 03:36:19,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:36:19,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-03 03:36:19,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:19,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-03 03:36:19,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=4256, Unknown=40, NotChecked=0, Total=4556 [2022-11-03 03:36:19,080 INFO L87 Difference]: Start difference. First operand 200 states and 238 transitions. Second operand has 41 states, 34 states have (on average 2.264705882352941) internal successors, (77), 37 states have internal predecessors, (77), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 03:36:23,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:23,291 INFO L93 Difference]: Finished difference Result 219 states and 261 transitions. [2022-11-03 03:36:23,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 03:36:23,291 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 34 states have (on average 2.264705882352941) internal successors, (77), 37 states have internal predecessors, (77), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 46 [2022-11-03 03:36:23,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:23,293 INFO L225 Difference]: With dead ends: 219 [2022-11-03 03:36:23,293 INFO L226 Difference]: Without dead ends: 219 [2022-11-03 03:36:23,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1717 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=351, Invalid=5452, Unknown=49, NotChecked=0, Total=5852 [2022-11-03 03:36:23,295 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 86 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 404 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:23,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1229 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1448 Invalid, 0 Unknown, 404 Unchecked, 1.7s Time] [2022-11-03 03:36:23,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-11-03 03:36:23,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 211. [2022-11-03 03:36:23,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 141 states have (on average 1.4680851063829787) internal successors, (207), 187 states have internal predecessors, (207), 26 states have call successors, (26), 8 states have call predecessors, (26), 6 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 03:36:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 251 transitions. [2022-11-03 03:36:23,303 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 251 transitions. Word has length 46 [2022-11-03 03:36:23,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:23,304 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 251 transitions. [2022-11-03 03:36:23,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 34 states have (on average 2.264705882352941) internal successors, (77), 37 states have internal predecessors, (77), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 03:36:23,304 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 251 transitions. [2022-11-03 03:36:23,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 03:36:23,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:23,305 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:23,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:36:23,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:23,519 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:36:23,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:23,519 INFO L85 PathProgramCache]: Analyzing trace with hash -446234026, now seen corresponding path program 1 times [2022-11-03 03:36:23,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:23,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41909104] [2022-11-03 03:36:23,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:23,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:36:26,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:26,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41909104] [2022-11-03 03:36:26,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41909104] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:36:26,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811423903] [2022-11-03 03:36:26,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:26,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:26,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:36:26,408 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:36:26,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 03:36:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:26,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-03 03:36:26,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:36:27,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:36:27,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:36:27,431 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:36:27,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 03:36:27,459 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:36:27,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-03 03:36:27,557 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:36:27,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 14 [2022-11-03 03:36:27,564 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:36:27,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 03:36:28,000 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2407 (Array Int Int)) (v_ArrVal_2406 (Array Int Int)) (v_ArrVal_2405 (Array Int Int)) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2399 Int) (|chain_node_~node~0#1.base| Int)) (and (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2405) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2406) |c_#memory_$Pointer$.base|) (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2404) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2407) |c_#memory_$Pointer$.offset|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store |c_old(#length)| |chain_node_~node~0#1.base| v_ArrVal_2399) |c_#length|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-03 03:36:28,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,063 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-03 03:36:28,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 42 [2022-11-03 03:36:28,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:36:28,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,141 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-03 03:36:28,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 53 [2022-11-03 03:36:28,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:28,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 03:36:28,167 INFO L356 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-11-03 03:36:28,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 13 [2022-11-03 03:36:28,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 15 [2022-11-03 03:36:28,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2022-11-03 03:36:28,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:36:28,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:28,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-03 03:36:28,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:36:29,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:31,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811423903] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:36:31,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [895732519] [2022-11-03 03:36:31,713 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-03 03:36:31,713 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:36:31,713 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:36:31,713 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:36:31,714 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:36:31,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:36:31,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,860 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:36:31,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:36:31,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:36:31,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:36:31,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:31,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:31,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:36:31,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:36:31,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:36:31,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:36:31,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:31,993 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:36:31,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:36:32,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:32,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,053 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:36:32,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:36:32,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,146 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:36:32,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:36:32,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:32,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,226 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:36:32,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:36:32,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:36:32,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:36:32,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:36:32,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,415 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:36:32,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:36:32,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:36:32,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:36:32,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:36:32,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:32,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:36:32,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:36:32,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,657 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:32,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:32,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:32,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:36:32,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:36:32,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:32,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,825 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:32,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:32,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:32,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,875 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:36:32,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:32,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:36:32,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:32,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:36:33,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:36:33,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:33,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,105 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:33,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:33,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:36:33,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:36:33,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,177 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:33,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:33,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,272 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:33,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:33,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:36:33,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:33,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:33,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:36:33,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:36:33,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,601 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 03:36:33,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 03:36:33,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,687 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:33,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:33,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,767 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:33,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:33,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,867 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:36:33,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:36:33,885 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-03 03:36:33,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:36:33,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:36:33,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:33,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:33,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:36:33,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:36:33,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:36:33,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:36:33,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:33,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:34,024 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:36:34,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:36:34,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:34,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:34,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:34,073 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:36:34,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:36:34,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:34,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:34,114 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:36:34,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:36:34,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:34,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:34,147 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:36:34,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:36:34,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:34,161 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-03 03:36:34,263 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:36:43,602 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9886#(and (= check_seq_next_~end.offset |check_seq_next_#in~end.offset|) (= check_seq_next_~beg.offset |check_seq_next_#in~beg.offset|) (= check_seq_next_~beg.base |check_seq_next_#in~beg.base|) (or (not (= check_seq_next_~end.offset 0)) (not (= check_seq_next_~end.base 0))) (= check_seq_next_~end.base |check_seq_next_#in~end.base|) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_48| Int)) (and (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_48|) 0) (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_48|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_48|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_48|)) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_48| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_48|))) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_86| Int) (|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_72| Int)) (and (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_72|) 0) |check_seq_next_#in~end.offset|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_72|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_86| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_72|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_86| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_72| 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_86| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_72|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_72|) 0) |check_seq_next_#in~end.base|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_72|) 1) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_86|) 0) |check_seq_next_#in~beg.offset|) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_72|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_72| 2)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_86|)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_86|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_86|) 1) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_86|) 0) |check_seq_next_#in~beg.base|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_86|))) (or (not (<= (+ check_seq_next_~beg.offset 4) (select |#length| check_seq_next_~beg.base))) (not (<= 0 check_seq_next_~beg.offset))) (or (not (= check_seq_next_~beg.offset 0)) (not (= check_seq_next_~beg.base 0))) (= |#NULL.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:36:43,603 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:36:43,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:36:43,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 36 [2022-11-03 03:36:43,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171068100] [2022-11-03 03:36:43,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:36:43,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-03 03:36:43,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:43,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-03 03:36:43,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=4041, Unknown=3, NotChecked=128, Total=4422 [2022-11-03 03:36:43,606 INFO L87 Difference]: Start difference. First operand 211 states and 251 transitions. Second operand has 37 states, 30 states have (on average 2.4) internal successors, (72), 34 states have internal predecessors, (72), 6 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-03 03:36:49,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:49,040 INFO L93 Difference]: Finished difference Result 228 states and 263 transitions. [2022-11-03 03:36:49,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 03:36:49,041 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 30 states have (on average 2.4) internal successors, (72), 34 states have internal predecessors, (72), 6 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 46 [2022-11-03 03:36:49,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:49,042 INFO L225 Difference]: With dead ends: 228 [2022-11-03 03:36:49,043 INFO L226 Difference]: Without dead ends: 228 [2022-11-03 03:36:49,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=384, Invalid=6255, Unknown=7, NotChecked=160, Total=6806 [2022-11-03 03:36:49,045 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 77 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 720 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:49,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1271 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1959 Invalid, 0 Unknown, 720 Unchecked, 2.3s Time] [2022-11-03 03:36:49,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-03 03:36:49,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 211. [2022-11-03 03:36:49,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 141 states have (on average 1.4539007092198581) internal successors, (205), 187 states have internal predecessors, (205), 26 states have call successors, (26), 8 states have call predecessors, (26), 6 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 03:36:49,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 249 transitions. [2022-11-03 03:36:49,052 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 249 transitions. Word has length 46 [2022-11-03 03:36:49,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:49,052 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 249 transitions. [2022-11-03 03:36:49,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 30 states have (on average 2.4) internal successors, (72), 34 states have internal predecessors, (72), 6 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-03 03:36:49,053 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 249 transitions. [2022-11-03 03:36:49,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-03 03:36:49,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:49,054 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:49,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 03:36:49,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:49,277 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:36:49,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:49,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1158653529, now seen corresponding path program 1 times [2022-11-03 03:36:49,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:49,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263460744] [2022-11-03 03:36:49,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:49,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-03 03:36:49,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:49,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263460744] [2022-11-03 03:36:49,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263460744] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:36:49,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124652779] [2022-11-03 03:36:49,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:49,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:49,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:36:49,950 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:36:49,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 03:36:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:50,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 03:36:50,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:36:50,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:50,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:50,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:50,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 03:36:50,301 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:36:50,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2022-11-03 03:36:50,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:36:50,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:36:50,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:36:50,755 WARN L833 $PredicateComparison]: unable to prove that (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#p1~0#1.base|) (or (<= 4 (select |c_#length| |c_ULTIMATE.start_main_~#p1~0#1.base|)) (exists ((|v_#length_BEFORE_CALL_133| (Array Int Int))) (let ((.cse0 (@diff |v_#length_BEFORE_CALL_133| |c_#length|))) (and (= |c_#length| (store |v_#length_BEFORE_CALL_133| .cse0 (select |c_#length| .cse0))) (<= 4 (select |v_#length_BEFORE_CALL_133| |c_ULTIMATE.start_main_~#p1~0#1.base|)) (<= (+ .cse0 1) |c_#StackHeapBarrier|))))) (= |c_ULTIMATE.start_main_~#p1~0#1.offset| 0)) is different from false [2022-11-03 03:36:50,759 WARN L855 $PredicateComparison]: unable to prove that (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#p1~0#1.base|) (or (<= 4 (select |c_#length| |c_ULTIMATE.start_main_~#p1~0#1.base|)) (exists ((|v_#length_BEFORE_CALL_133| (Array Int Int))) (let ((.cse0 (@diff |v_#length_BEFORE_CALL_133| |c_#length|))) (and (= |c_#length| (store |v_#length_BEFORE_CALL_133| .cse0 (select |c_#length| .cse0))) (<= 4 (select |v_#length_BEFORE_CALL_133| |c_ULTIMATE.start_main_~#p1~0#1.base|)) (<= (+ .cse0 1) |c_#StackHeapBarrier|))))) (= |c_ULTIMATE.start_main_~#p1~0#1.offset| 0)) is different from true [2022-11-03 03:36:50,785 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:36:50,931 WARN L833 $PredicateComparison]: unable to prove that (and (or (exists ((|v_#length_BEFORE_CALL_135| (Array Int Int))) (let ((.cse0 (@diff |v_#length_BEFORE_CALL_135| |c_#length|))) (and (<= (+ 2 .cse0) |c_ULTIMATE.start_main_~#p1~0#1.base|) (<= 4 (select |v_#length_BEFORE_CALL_135| |c_ULTIMATE.start_main_~#p1~0#1.base|)) (= |c_#length| (store |v_#length_BEFORE_CALL_135| .cse0 (select |c_#length| .cse0)))))) (<= 4 (select |c_#length| |c_ULTIMATE.start_main_~#p1~0#1.base|))) (= |c_ULTIMATE.start_main_~#p1~0#1.offset| 0)) is different from false [2022-11-03 03:36:50,935 WARN L855 $PredicateComparison]: unable to prove that (and (or (exists ((|v_#length_BEFORE_CALL_135| (Array Int Int))) (let ((.cse0 (@diff |v_#length_BEFORE_CALL_135| |c_#length|))) (and (<= (+ 2 .cse0) |c_ULTIMATE.start_main_~#p1~0#1.base|) (<= 4 (select |v_#length_BEFORE_CALL_135| |c_ULTIMATE.start_main_~#p1~0#1.base|)) (= |c_#length| (store |v_#length_BEFORE_CALL_135| .cse0 (select |c_#length| .cse0)))))) (<= 4 (select |c_#length| |c_ULTIMATE.start_main_~#p1~0#1.base|))) (= |c_ULTIMATE.start_main_~#p1~0#1.offset| 0)) is different from true [2022-11-03 03:36:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 1 not checked. [2022-11-03 03:36:50,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:36:51,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124652779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:36:51,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1982314403] [2022-11-03 03:36:51,133 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-03 03:36:51,133 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:36:51,133 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:36:51,133 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:36:51,134 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:36:51,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:36:51,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,294 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:36:51,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:36:51,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:36:51,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:36:51,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:36:51,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:51,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:51,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:36:51,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:36:51,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:36:51,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,420 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:36:51,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:36:51,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,471 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:36:51,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:36:51,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:51,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,567 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:36:51,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:36:51,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:51,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,647 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:36:51,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:36:51,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:36:51,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:36:51,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:36:51,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,825 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:36:51,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:36:51,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:36:51,876 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:36:51,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:51,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:36:51,997 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:52,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:36:52,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:36:52,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,125 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:52,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:52,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:52,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:52,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:36:52,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:36:52,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,309 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:52,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:52,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:36:52,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:52,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:52,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:36:52,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:52,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:36:52,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:36:52,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,575 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:52,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:52,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:52,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:36:52,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:36:52,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:52,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,741 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:52,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:52,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,785 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:52,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,796 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:36:52,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:36:52,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:36:52,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,936 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:52,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:52,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:52,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:53,033 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:53,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:53,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:36:53,370 INFO L356 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-03 03:36:53,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 259 treesize of output 248 [2022-11-03 03:36:53,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:53,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:53,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:53,778 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:36:53,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:36:53,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:53,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:53,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:53,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:53,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:53,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:53,882 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:36:53,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:36:53,899 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 94 for LOIs [2022-11-03 03:36:53,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:36:53,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:36:54,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:54,047 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:36:54,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:36:54,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:54,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:36:54,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:54,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:36:54,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:36:54,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:54,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:54,401 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:36:54,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:36:54,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:54,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:54,468 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:36:54,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:36:54,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:54,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:36:54,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:54,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:54,680 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:36:54,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:36:54,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:36:54,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:36:54,747 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:36:54,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:36:54,761 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:37:00,795 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10559#(and (= |ULTIMATE.start_create_sll_#res#1.offset| |ULTIMATE.start_main_~list~1#1.offset|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p2~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_main_~#p2~0#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base|) 0) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_49| Int)) (and (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_49|) (= (select (store (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base| 1) |v_ULTIMATE.start_create_sll_~#list~0#1.base_49|) 0) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_49|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_49|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~#list~0#1.base_49|) 0) |ULTIMATE.start_create_sll_#res#1.base|) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_49| 0)) (= |ULTIMATE.start_create_sll_#res#1.offset| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~#list~0#1.base_49|) 0)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_49|) 0))) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |ULTIMATE.start_main_~#p1~0#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p1~0#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.offset| |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= |ULTIMATE.start_create_sll_~pp2#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base|) 0) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_create_sll_~pp2#1.base|) (< (select |#length| |ULTIMATE.start_main_~#p1~0#1.base|) (+ |ULTIMATE.start_main_~#p1~0#1.offset| 4)) (= |ULTIMATE.start_create_sll_~pp1#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (= |ULTIMATE.start_create_sll_#res#1.base| |ULTIMATE.start_main_~list~1#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (= |ULTIMATE.start_main_~#p2~0#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (< 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-03 03:37:00,795 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:37:00,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:37:00,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 15 [2022-11-03 03:37:00,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223797937] [2022-11-03 03:37:00,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:37:00,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:37:00,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:00,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:37:00,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=875, Unknown=4, NotChecked=122, Total=1122 [2022-11-03 03:37:00,797 INFO L87 Difference]: Start difference. First operand 211 states and 249 transitions. Second operand has 16 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 12 states have internal predecessors, (53), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 03:37:01,084 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 4 (select |c_#length| |c_ULTIMATE.start_main_~#p1~0#1.base|)))) (and (= |c_ULTIMATE.start_create_sll_~pp1#1.offset| 0) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#p1~0#1.base|) (= |c_ULTIMATE.start_main_~#p1~0#1.offset| |c_ULTIMATE.start_create_sll_~pp1#1.offset|) .cse0 (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#p1~0#1.base|) (or .cse0 (exists ((|v_#length_BEFORE_CALL_133| (Array Int Int))) (let ((.cse1 (@diff |v_#length_BEFORE_CALL_133| |c_#length|))) (and (= |c_#length| (store |v_#length_BEFORE_CALL_133| .cse1 (select |c_#length| .cse1))) (<= 4 (select |v_#length_BEFORE_CALL_133| |c_ULTIMATE.start_main_~#p1~0#1.base|)) (<= (+ .cse1 1) |c_#StackHeapBarrier|))))) (= |c_ULTIMATE.start_main_~#p1~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (or (exists ((|v_#length_BEFORE_CALL_135| (Array Int Int))) (let ((.cse2 (@diff |v_#length_BEFORE_CALL_135| |c_#length|))) (and (<= (+ 2 .cse2) |c_ULTIMATE.start_main_~#p1~0#1.base|) (<= 4 (select |v_#length_BEFORE_CALL_135| |c_ULTIMATE.start_main_~#p1~0#1.base|)) (= |c_#length| (store |v_#length_BEFORE_CALL_135| .cse2 (select |c_#length| .cse2)))))) .cse0) (= |c_ULTIMATE.start_main_~#p1~0#1.offset| 0))) is different from false [2022-11-03 03:37:01,089 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 4 (select |c_#length| |c_ULTIMATE.start_main_~#p1~0#1.base|)))) (and (= |c_ULTIMATE.start_create_sll_~pp1#1.offset| 0) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#p1~0#1.base|) (= |c_ULTIMATE.start_main_~#p1~0#1.offset| |c_ULTIMATE.start_create_sll_~pp1#1.offset|) .cse0 (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#p1~0#1.base|) (or .cse0 (exists ((|v_#length_BEFORE_CALL_133| (Array Int Int))) (let ((.cse1 (@diff |v_#length_BEFORE_CALL_133| |c_#length|))) (and (= |c_#length| (store |v_#length_BEFORE_CALL_133| .cse1 (select |c_#length| .cse1))) (<= 4 (select |v_#length_BEFORE_CALL_133| |c_ULTIMATE.start_main_~#p1~0#1.base|)) (<= (+ .cse1 1) |c_#StackHeapBarrier|))))) (= |c_ULTIMATE.start_main_~#p1~0#1.base| |c_ULTIMATE.start_create_sll_~pp1#1.base|) (or (exists ((|v_#length_BEFORE_CALL_135| (Array Int Int))) (let ((.cse2 (@diff |v_#length_BEFORE_CALL_135| |c_#length|))) (and (<= (+ 2 .cse2) |c_ULTIMATE.start_main_~#p1~0#1.base|) (<= 4 (select |v_#length_BEFORE_CALL_135| |c_ULTIMATE.start_main_~#p1~0#1.base|)) (= |c_#length| (store |v_#length_BEFORE_CALL_135| .cse2 (select |c_#length| .cse2)))))) .cse0) (= |c_ULTIMATE.start_main_~#p1~0#1.offset| 0))) is different from true [2022-11-03 03:37:01,219 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 4 (select |c_#length| |c_ULTIMATE.start_main_~#p1~0#1.base|)))) (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#p1~0#1.base|) .cse0 (or .cse0 (exists ((|v_#length_BEFORE_CALL_133| (Array Int Int))) (let ((.cse1 (@diff |v_#length_BEFORE_CALL_133| |c_#length|))) (and (= |c_#length| (store |v_#length_BEFORE_CALL_133| .cse1 (select |c_#length| .cse1))) (<= 4 (select |v_#length_BEFORE_CALL_133| |c_ULTIMATE.start_main_~#p1~0#1.base|)) (<= (+ .cse1 1) |c_#StackHeapBarrier|))))) (or (exists ((|v_#length_BEFORE_CALL_135| (Array Int Int))) (let ((.cse2 (@diff |v_#length_BEFORE_CALL_135| |c_#length|))) (and (<= (+ 2 .cse2) |c_ULTIMATE.start_main_~#p1~0#1.base|) (<= 4 (select |v_#length_BEFORE_CALL_135| |c_ULTIMATE.start_main_~#p1~0#1.base|)) (= |c_#length| (store |v_#length_BEFORE_CALL_135| .cse2 (select |c_#length| .cse2)))))) .cse0) (= |c_ULTIMATE.start_main_~#p1~0#1.offset| 0))) is different from false [2022-11-03 03:37:01,224 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (<= 4 (select |c_#length| |c_ULTIMATE.start_main_~#p1~0#1.base|)))) (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#p1~0#1.base|) .cse0 (or .cse0 (exists ((|v_#length_BEFORE_CALL_133| (Array Int Int))) (let ((.cse1 (@diff |v_#length_BEFORE_CALL_133| |c_#length|))) (and (= |c_#length| (store |v_#length_BEFORE_CALL_133| .cse1 (select |c_#length| .cse1))) (<= 4 (select |v_#length_BEFORE_CALL_133| |c_ULTIMATE.start_main_~#p1~0#1.base|)) (<= (+ .cse1 1) |c_#StackHeapBarrier|))))) (or (exists ((|v_#length_BEFORE_CALL_135| (Array Int Int))) (let ((.cse2 (@diff |v_#length_BEFORE_CALL_135| |c_#length|))) (and (<= (+ 2 .cse2) |c_ULTIMATE.start_main_~#p1~0#1.base|) (<= 4 (select |v_#length_BEFORE_CALL_135| |c_ULTIMATE.start_main_~#p1~0#1.base|)) (= |c_#length| (store |v_#length_BEFORE_CALL_135| .cse2 (select |c_#length| .cse2)))))) .cse0) (= |c_ULTIMATE.start_main_~#p1~0#1.offset| 0))) is different from true [2022-11-03 03:37:01,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:01,993 INFO L93 Difference]: Finished difference Result 220 states and 259 transitions. [2022-11-03 03:37:01,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:37:01,994 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 12 states have internal predecessors, (53), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 48 [2022-11-03 03:37:01,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:01,995 INFO L225 Difference]: With dead ends: 220 [2022-11-03 03:37:01,995 INFO L226 Difference]: Without dead ends: 220 [2022-11-03 03:37:01,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=161, Invalid=1107, Unknown=8, NotChecked=284, Total=1560 [2022-11-03 03:37:01,996 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 403 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 336 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:01,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 202 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 777 Invalid, 0 Unknown, 336 Unchecked, 1.0s Time] [2022-11-03 03:37:01,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-03 03:37:02,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 210. [2022-11-03 03:37:02,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 141 states have (on average 1.446808510638298) internal successors, (204), 186 states have internal predecessors, (204), 26 states have call successors, (26), 8 states have call predecessors, (26), 6 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 03:37:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 248 transitions. [2022-11-03 03:37:02,004 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 248 transitions. Word has length 48 [2022-11-03 03:37:02,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:02,005 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 248 transitions. [2022-11-03 03:37:02,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 12 states have internal predecessors, (53), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-03 03:37:02,005 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 248 transitions. [2022-11-03 03:37:02,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 03:37:02,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:02,006 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:02,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 03:37:02,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-03 03:37:02,225 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:37:02,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:02,225 INFO L85 PathProgramCache]: Analyzing trace with hash 362497408, now seen corresponding path program 1 times [2022-11-03 03:37:02,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:02,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019718226] [2022-11-03 03:37:02,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:02,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:37:06,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:06,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019718226] [2022-11-03 03:37:06,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019718226] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:37:06,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425858456] [2022-11-03 03:37:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:06,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:37:06,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:37:06,738 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:37:06,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 03:37:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:07,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 140 conjunts are in the unsatisfiable core [2022-11-03 03:37:07,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:07,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:07,504 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:37:07,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 21 [2022-11-03 03:37:07,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:08,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:37:08,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:08,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:08,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 29 [2022-11-03 03:37:08,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 [2022-11-03 03:37:08,483 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-03 03:37:08,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 15 [2022-11-03 03:37:08,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-03 03:37:08,930 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:37:08,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-03 03:37:08,966 INFO L356 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-03 03:37:08,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 45 [2022-11-03 03:37:09,131 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:37:09,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 27 [2022-11-03 03:37:09,142 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:37:09,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 03:37:09,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 03:37:09,673 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2920 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_2919 (Array Int Int)) (v_ArrVal_2918 (Array Int Int)) (v_ArrVal_2917 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2918) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2920) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2917) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2919)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-03 03:37:09,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:09,743 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-03 03:37:09,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 28 treesize of output 44 [2022-11-03 03:37:09,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:09,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:37:09,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:09,838 INFO L356 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2022-11-03 03:37:09,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 79 [2022-11-03 03:37:09,860 INFO L356 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-11-03 03:37:09,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-03 03:37:09,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 26 [2022-11-03 03:37:10,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:37:10,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 63 treesize of output 51 [2022-11-03 03:37:11,019 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-03 03:37:11,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 16 treesize of output 18 [2022-11-03 03:37:11,456 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:37:11,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 16 [2022-11-03 03:37:11,462 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-03 03:37:11,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:37:11,952 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:37:11,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 15 [2022-11-03 03:37:12,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425858456] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:37:12,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [347427104] [2022-11-03 03:37:12,794 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2022-11-03 03:37:12,794 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:37:12,795 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:37:12,795 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:37:12,795 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:37:12,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:12,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:12,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:12,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:12,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:12,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:12,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:12,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:12,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:12,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:37:12,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:12,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:12,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:12,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:12,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:12,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:12,958 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:37:12,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:37:12,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:37:12,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:37:12,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:12,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:13,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:37:13,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:37:13,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:37:13,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:37:13,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,084 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:37:13,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:37:13,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,147 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:37:13,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:37:13,158 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:13,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,219 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:37:13,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:37:13,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:13,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,312 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:37:13,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:37:13,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:37:13,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:37:13,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:37:13,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,492 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:37:13,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:37:13,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:37:13,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:37:13,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:37:13,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:37:13,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:37:13,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:13,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,750 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:13,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:13,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:13,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:37:13,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:13,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:37:13,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,938 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:13,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:13,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:13,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:13,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:14,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:37:14,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:37:14,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:37:14,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:14,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:37:14,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,240 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:14,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:14,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:14,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:37:14,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:37:14,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:14,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,407 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:14,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:14,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:14,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:37:14,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:14,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:37:14,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:37:14,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,741 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 03:37:14,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 03:37:14,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,836 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:14,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:14,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,916 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:14,916 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:14,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:15,010 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:37:15,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:37:15,029 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-03 03:37:15,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:37:15,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:37:15,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:37:15,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:15,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:15,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:15,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:37:15,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:15,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:37:15,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:37:15,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:15,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:15,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:15,157 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:37:15,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:37:15,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:15,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:15,200 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:37:15,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:37:15,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:15,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:15,243 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:37:15,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:37:15,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:15,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:15,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:15,282 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:37:15,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:37:15,288 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-03 03:37:15,543 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 101 for LOIs [2022-11-03 03:37:15,663 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:37:28,161 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11283#(and (or (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| Int)) (and (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0) 4) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0))) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| 2)) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0) 0)) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94| Int)) (and (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94| 0)) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|) 0) 0)) (not (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|) 0))) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|))) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 1) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) 1) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) 0) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|)) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) 0))) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| Int)) (and (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0) 4) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0))) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| 2)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 1) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0) 0)) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) 1) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) 0) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94| Int)) (and (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94| 0)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|) 0) 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|))) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|)) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) 0))) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| Int)) (and (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0) 4) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0))) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| 2)) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94| Int)) (and (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94| 0)) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|) 0) 0)) (not (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|) 0))) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|))) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 1) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0) 0)) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) 1) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) 0) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|)) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) 0))) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| Int)) (and (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0) 4) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0))) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| 2)) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0) 0)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 1) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) 1) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) 0) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94| Int)) (and (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|) 1) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94| 0)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|) 0) 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_94|))) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109| 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|)) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_109|) 0)) 0)))) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_53| Int)) (and (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_53|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_53|) 0) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_53|) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_53| 0)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_53|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_53|)))) (= |#NULL.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:37:28,162 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:37:28,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:37:28,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 32] total 57 [2022-11-03 03:37:28,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722571961] [2022-11-03 03:37:28,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:37:28,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-03 03:37:28,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:28,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-03 03:37:28,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=7675, Unknown=16, NotChecked=176, Total=8190 [2022-11-03 03:37:28,165 INFO L87 Difference]: Start difference. First operand 210 states and 248 transitions. Second operand has 57 states, 43 states have (on average 1.813953488372093) internal successors, (78), 51 states have internal predecessors, (78), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 03:37:34,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:34,069 INFO L93 Difference]: Finished difference Result 223 states and 265 transitions. [2022-11-03 03:37:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 03:37:34,070 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 43 states have (on average 1.813953488372093) internal successors, (78), 51 states have internal predecessors, (78), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2022-11-03 03:37:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:34,071 INFO L225 Difference]: With dead ends: 223 [2022-11-03 03:37:34,071 INFO L226 Difference]: Without dead ends: 223 [2022-11-03 03:37:34,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3149 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=443, Invalid=10041, Unknown=26, NotChecked=202, Total=10712 [2022-11-03 03:37:34,073 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 61 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 2961 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 3631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 627 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:34,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1941 Invalid, 3631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2961 Invalid, 0 Unknown, 627 Unchecked, 3.5s Time] [2022-11-03 03:37:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-03 03:37:34,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 213. [2022-11-03 03:37:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 143 states have (on average 1.4475524475524475) internal successors, (207), 189 states have internal predecessors, (207), 26 states have call successors, (26), 8 states have call predecessors, (26), 7 states have return successors, (19), 15 states have call predecessors, (19), 18 states have call successors, (19) [2022-11-03 03:37:34,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 252 transitions. [2022-11-03 03:37:34,084 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 252 transitions. Word has length 50 [2022-11-03 03:37:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:34,085 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 252 transitions. [2022-11-03 03:37:34,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 43 states have (on average 1.813953488372093) internal successors, (78), 51 states have internal predecessors, (78), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 03:37:34,085 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 252 transitions. [2022-11-03 03:37:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 03:37:34,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:34,086 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:34,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 03:37:34,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-03 03:37:34,301 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:37:34,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:34,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1558520841, now seen corresponding path program 1 times [2022-11-03 03:37:34,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:34,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619355326] [2022-11-03 03:37:34,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:34,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:37:35,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:35,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619355326] [2022-11-03 03:37:35,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619355326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:37:35,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530925343] [2022-11-03 03:37:35,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:35,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:37:35,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:37:35,033 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:37:35,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 03:37:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:35,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 03:37:35,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:35,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 12 [2022-11-03 03:37:35,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:37:35,553 INFO L356 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-11-03 03:37:35,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 16 [2022-11-03 03:37:35,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:37:35,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:37:35,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-03 03:37:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 03:37:35,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:37:36,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530925343] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:37:36,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [821805506] [2022-11-03 03:37:36,024 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-03 03:37:36,024 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:37:36,025 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:37:36,025 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:37:36,025 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:37:36,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:37:36,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,154 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:37:36,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:37:36,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:37:36,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:37:36,187 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:37:36,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:36,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:36,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:37:36,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:37:36,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:37:36,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,292 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:37:36,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:37:36,303 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:36,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,348 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:37:36,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:37:36,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:36,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,443 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:37:36,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:37:36,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,513 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:37:36,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:37:36,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:37:36,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:37:36,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:37:36,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,731 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:37:36,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:37:36,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:37:36,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:37:36,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:37:36,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:37:36,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:37:36,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:36,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:36,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,008 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:37,008 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:37,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:37:37,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:37,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:37,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:37:37,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,170 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:37,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:37,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:37,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:37:37,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:37:37,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:37,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:37,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:37:37,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:37:37,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,446 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:37,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:37,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:37:37,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:37,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:37,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:37:37,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,603 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:37,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:37,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:37:37,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:37,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:37,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:37:37,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,789 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:37,789 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:37,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:37,869 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:37,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:38,103 INFO L356 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-03 03:37:38,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 259 treesize of output 248 [2022-11-03 03:37:38,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:37:38,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:38,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:38,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:38,590 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:38,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:38,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:38,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:38,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:38,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:38,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:38,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:38,692 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:37:38,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:37:38,715 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 94 for LOIs [2022-11-03 03:37:38,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:37:38,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:37:38,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:37:38,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:38,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:38,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:38,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:37:38,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:38,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:37:38,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:37:39,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:39,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:39,169 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:37:39,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:37:39,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:39,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:39,242 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:37:39,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:37:39,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:39,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:39,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:39,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:39,452 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:37:39,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:37:39,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:39,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:39,514 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:37:39,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:37:39,526 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:37:45,817 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11950#(and (= |ULTIMATE.start_create_sll_#res#1.offset| |ULTIMATE.start_main_~list~1#1.offset|) (not (= (select |#valid| |ULTIMATE.start_main_~#p2~0#1.base|) 1)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p2~0#1.base|) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_main_~#p2~0#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |#valid| |ULTIMATE.start_main_~#p1~0#1.base|) 1) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_55| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_55| 0)) (= |ULTIMATE.start_create_sll_#res#1.offset| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~#list~0#1.base_55|) 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_55|)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_55|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_55|) (= (select (store (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base| 1) |v_ULTIMATE.start_create_sll_~#list~0#1.base_55|) 0) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_55|) 0) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~#list~0#1.base_55|) 0) |ULTIMATE.start_create_sll_#res#1.base|))) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base|) 0) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (<= (+ |ULTIMATE.start_main_~#p1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#p1~0#1.base|)) (= |ULTIMATE.start_main_~#p1~0#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p1~0#1.base|) (= |ULTIMATE.start_main_#t~mem21#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|)) (= |ULTIMATE.start_create_sll_~pp1#1.offset| |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= |ULTIMATE.start_create_sll_~pp2#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) |ULTIMATE.start_main_#t~mem21#1.offset|) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base|) 0) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_create_sll_~pp2#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (= |ULTIMATE.start_create_sll_#res#1.base| |ULTIMATE.start_main_~list~1#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (= |ULTIMATE.start_main_~#p2~0#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (< 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-03 03:37:45,817 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:37:45,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:37:45,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2022-11-03 03:37:45,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114945384] [2022-11-03 03:37:45,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:37:45,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:37:45,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:37:45,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:37:45,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=819, Unknown=0, NotChecked=0, Total=930 [2022-11-03 03:37:45,818 INFO L87 Difference]: Start difference. First operand 213 states and 252 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:37:46,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:46,523 INFO L93 Difference]: Finished difference Result 222 states and 262 transitions. [2022-11-03 03:37:46,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:37:46,524 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2022-11-03 03:37:46,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:46,525 INFO L225 Difference]: With dead ends: 222 [2022-11-03 03:37:46,525 INFO L226 Difference]: Without dead ends: 222 [2022-11-03 03:37:46,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 87 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 03:37:46,526 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 189 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:46,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 302 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 602 Invalid, 0 Unknown, 117 Unchecked, 0.6s Time] [2022-11-03 03:37:46,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-03 03:37:46,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 212. [2022-11-03 03:37:46,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 143 states have (on average 1.4405594405594406) internal successors, (206), 188 states have internal predecessors, (206), 26 states have call successors, (26), 8 states have call predecessors, (26), 7 states have return successors, (19), 15 states have call predecessors, (19), 18 states have call successors, (19) [2022-11-03 03:37:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 251 transitions. [2022-11-03 03:37:46,532 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 251 transitions. Word has length 49 [2022-11-03 03:37:46,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:46,537 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 251 transitions. [2022-11-03 03:37:46,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:37:46,537 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 251 transitions. [2022-11-03 03:37:46,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 03:37:46,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:46,539 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:46,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 03:37:46,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-03 03:37:46,740 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:37:46,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:46,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1558520840, now seen corresponding path program 1 times [2022-11-03 03:37:46,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:46,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481258766] [2022-11-03 03:37:46,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:46,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:47,469 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:37:47,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:47,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481258766] [2022-11-03 03:37:47,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481258766] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:37:47,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810109141] [2022-11-03 03:37:47,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:47,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:37:47,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:37:47,473 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:37:47,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 03:37:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:47,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 03:37:47,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:47,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:37:47,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:37:48,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:48,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2022-11-03 03:37:48,038 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 03:37:48,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 11 [2022-11-03 03:37:48,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:37:48,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:37:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:37:48,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:37:50,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810109141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:37:50,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [696107770] [2022-11-03 03:37:50,553 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-03 03:37:50,553 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:37:50,553 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:37:50,553 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:37:50,553 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:37:50,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:37:50,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,680 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:37:50,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:37:50,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:37:50,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:37:50,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:50,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:50,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:37:50,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:37:50,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:37:50,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:37:50,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,803 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:37:50,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:37:50,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:50,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,860 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:37:50,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:37:50,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:50,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:50,950 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:37:50,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:37:50,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,020 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:37:51,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:37:51,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:37:51,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:37:51,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:37:51,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,224 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:37:51,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:37:51,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:37:51,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:37:51,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:37:51,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:51,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:37:51,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,385 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:37:51,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,469 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:51,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:51,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:51,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:51,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:37:51,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:37:51,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,633 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:51,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:51,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:51,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:51,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:37:51,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:37:51,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:37:51,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:37:51,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:51,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,924 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:51,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:51,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:37:51,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:51,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:37:52,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,008 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:52,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:52,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,103 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:52,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:52,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:37:52,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:37:52,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:52,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:37:52,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,309 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:52,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:52,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,398 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:52,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:52,609 INFO L356 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-03 03:37:52,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 259 treesize of output 248 [2022-11-03 03:37:52,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:37:53,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,112 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:37:53,112 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:37:53,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,230 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:37:53,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:37:53,247 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 94 for LOIs [2022-11-03 03:37:53,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:37:53,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:37:53,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:53,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:53,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:37:53,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:37:53,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:37:53,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:37:53,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:53,672 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:37:53,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:37:53,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:53,760 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:37:53,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:37:53,796 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:53,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:37:53,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:53,958 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:37:53,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:37:54,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:54,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:37:54,031 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:37:54,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:37:54,044 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:38:00,717 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12590#(and (= |ULTIMATE.start_create_sll_#res#1.offset| |ULTIMATE.start_main_~list~1#1.offset|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p2~0#1.base|) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_56| Int)) (and (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_56|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~#list~0#1.base_56|) 0) |ULTIMATE.start_create_sll_#res#1.base|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_56|) 0) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_56| 0)) (= (select (store (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base| 1) |v_ULTIMATE.start_create_sll_~#list~0#1.base_56|) 0) (= |ULTIMATE.start_create_sll_#res#1.offset| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~#list~0#1.base_56|) 0)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_56|)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_56|))) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_main_~#p2~0#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |#valid| |ULTIMATE.start_main_~#p1~0#1.base|) 1) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base|) 0) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (<= (+ |ULTIMATE.start_main_~#p1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#p1~0#1.base|)) (= |ULTIMATE.start_main_~#p1~0#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#p1~0#1.base|) (= |ULTIMATE.start_main_#t~mem21#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|)) (= |ULTIMATE.start_create_sll_~pp1#1.offset| |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= |ULTIMATE.start_create_sll_~pp2#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (= |#NULL.offset| 0) (< (select |#length| |ULTIMATE.start_main_~#p2~0#1.base|) (+ |ULTIMATE.start_main_~#p2~0#1.offset| 4)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) |ULTIMATE.start_main_#t~mem21#1.offset|) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select (store |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#p1~0#1.base| 1) |ULTIMATE.start_main_~#p2~0#1.base|) 0) (= |ULTIMATE.start_create_sll_#in~pp2#1.base| |ULTIMATE.start_create_sll_~pp2#1.base|) (= |ULTIMATE.start_create_sll_~pp1#1.base| |ULTIMATE.start_create_sll_#in~pp1#1.base|) (= |ULTIMATE.start_create_sll_#res#1.base| |ULTIMATE.start_main_~list~1#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (= |ULTIMATE.start_main_~#p2~0#1.offset| |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (< 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-03 03:38:00,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:38:00,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:38:00,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2022-11-03 03:38:00,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176775858] [2022-11-03 03:38:00,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:38:00,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 03:38:00,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:00,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 03:38:00,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 03:38:00,718 INFO L87 Difference]: Start difference. First operand 212 states and 251 transitions. Second operand has 17 states, 14 states have (on average 4.214285714285714) internal successors, (59), 15 states have internal predecessors, (59), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-03 03:38:01,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:01,718 INFO L93 Difference]: Finished difference Result 221 states and 261 transitions. [2022-11-03 03:38:01,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:38:01,719 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.214285714285714) internal successors, (59), 15 states have internal predecessors, (59), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 49 [2022-11-03 03:38:01,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:01,720 INFO L225 Difference]: With dead ends: 221 [2022-11-03 03:38:01,720 INFO L226 Difference]: Without dead ends: 221 [2022-11-03 03:38:01,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 81 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 03:38:01,721 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 586 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:01,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 151 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 568 Invalid, 0 Unknown, 57 Unchecked, 0.8s Time] [2022-11-03 03:38:01,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-03 03:38:01,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 211. [2022-11-03 03:38:01,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 143 states have (on average 1.4335664335664335) internal successors, (205), 187 states have internal predecessors, (205), 26 states have call successors, (26), 8 states have call predecessors, (26), 7 states have return successors, (19), 15 states have call predecessors, (19), 18 states have call successors, (19) [2022-11-03 03:38:01,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 250 transitions. [2022-11-03 03:38:01,728 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 250 transitions. Word has length 49 [2022-11-03 03:38:01,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:01,728 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 250 transitions. [2022-11-03 03:38:01,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.214285714285714) internal successors, (59), 15 states have internal predecessors, (59), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-03 03:38:01,728 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 250 transitions. [2022-11-03 03:38:01,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 03:38:01,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:01,729 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:38:01,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 03:38:01,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:38:01,945 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting check_seq_nextErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:38:01,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:01,945 INFO L85 PathProgramCache]: Analyzing trace with hash 362487338, now seen corresponding path program 1 times [2022-11-03 03:38:01,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:01,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854419949] [2022-11-03 03:38:01,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:01,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:38:07,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:07,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854419949] [2022-11-03 03:38:07,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854419949] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:38:07,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722853262] [2022-11-03 03:38:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:07,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:38:07,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:38:07,455 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:38:07,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 03:38:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:07,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 191 conjunts are in the unsatisfiable core [2022-11-03 03:38:07,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:38:07,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:08,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:38:08,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:38:08,642 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:38:08,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-03 03:38:08,688 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:38:08,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:38:08,862 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:38:08,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 3 [2022-11-03 03:38:08,870 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:38:08,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-11-03 03:38:12,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:12,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:12,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:12,397 INFO L356 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-03 03:38:12,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 36 treesize of output 34 [2022-11-03 03:38:12,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:12,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:12,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:12,441 INFO L356 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-03 03:38:12,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 33 treesize of output 43 [2022-11-03 03:38:12,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-03 03:38:12,484 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 03:38:12,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-11-03 03:38:12,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 treesize of output 19 [2022-11-03 03:38:12,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 03:38:12,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-03 03:38:12,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2022-11-03 03:38:13,434 INFO L356 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2022-11-03 03:38:13,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2022-11-03 03:38:13,482 INFO L356 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-11-03 03:38:13,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 113 treesize of output 106 [2022-11-03 03:38:13,800 INFO L356 Elim1Store]: treesize reduction 33, result has 19.5 percent of original size [2022-11-03 03:38:13,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 95 treesize of output 58 [2022-11-03 03:38:13,820 INFO L356 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-11-03 03:38:13,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 45 [2022-11-03 03:38:13,830 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:38:13,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 41 treesize of output 35 [2022-11-03 03:38:14,530 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3694 (Array Int Int)) (v_ArrVal_3695 (Array Int Int)) (v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3694) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3697)) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_3695) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3696)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-03 03:38:14,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:14,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:14,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:14,686 INFO L356 Elim1Store]: treesize reduction 74, result has 35.1 percent of original size [2022-11-03 03:38:14,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 104 treesize of output 123 [2022-11-03 03:38:14,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:14,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:14,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:14,796 INFO L356 Elim1Store]: treesize reduction 94, result has 30.9 percent of original size [2022-11-03 03:38:14,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 100 treesize of output 126 [2022-11-03 03:38:14,833 INFO L356 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2022-11-03 03:38:14,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 76 treesize of output 74 [2022-11-03 03:38:15,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 52 treesize of output 40 [2022-11-03 03:38:15,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 43 treesize of output 33 [2022-11-03 03:38:15,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 59 [2022-11-03 03:38:15,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:38:15,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 9 treesize of output 7 [2022-11-03 03:38:15,331 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 03:38:15,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 9 treesize of output 7 [2022-11-03 03:38:16,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:38:17,144 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-03 03:38:17,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-03 03:38:18,032 INFO L356 Elim1Store]: treesize reduction 33, result has 8.3 percent of original size [2022-11-03 03:38:18,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 81 treesize of output 43 [2022-11-03 03:38:18,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:18,045 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-03 03:38:18,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2022-11-03 03:38:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-11-03 03:38:18,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:38:19,159 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:38:19,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 15 [2022-11-03 03:38:20,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722853262] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:38:20,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [428813058] [2022-11-03 03:38:20,347 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2022-11-03 03:38:20,347 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:38:20,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:38:20,348 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:38:20,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:38:20,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:38:20,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,487 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:38:20,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:38:20,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:38:20,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:38:20,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:20,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:20,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:38:20,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:38:20,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:38:20,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:38:20,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,615 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:38:20,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:38:20,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,669 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:38:20,670 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:38:20,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:38:20,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,748 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:38:20,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:38:20,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,872 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:38:20,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:38:20,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:38:20,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:38:20,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:20,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:38:20,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:38:21,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,054 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:38:21,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:38:21,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:38:21,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:38:21,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:38:21,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:38:21,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:38:21,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:38:21,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,312 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:38:21,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:38:21,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:38:21,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:21,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:38:21,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:21,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,465 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:38:21,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:38:21,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:38:21,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:21,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:21,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:38:21,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:38:21,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:38:21,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:38:21,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,727 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:38:21,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:38:21,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:21,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:38:21,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:38:21,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:21,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,917 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:38:21,917 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:38:21,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:21,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:21,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:38:21,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:21,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:38:22,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:38:22,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,211 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 03:38:22,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 03:38:22,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,299 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:38:22,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:38:22,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,381 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:38:22,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:38:22,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,498 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:38:22,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:38:22,517 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-03 03:38:22,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:38:22,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:38:22,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:38:22,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:22,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:22,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:38:22,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:38:22,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:38:22,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:22,676 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:38:22,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:38:22,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:38:22,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:22,736 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:38:22,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:38:22,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:38:22,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:22,791 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:38:22,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:38:22,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:22,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:22,830 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:38:22,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:38:22,841 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-03 03:38:23,052 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:38:36,568 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13316#(and (= check_seq_next_~end.offset |check_seq_next_#in~end.offset|) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_143| Int) (|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_129| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_129| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_143|)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_129| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_143| 2)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_129|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_129|)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_129|) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_143|) 0) |check_seq_next_#in~beg.offset|) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_143|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_129| 0)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_143|) 1) (= |check_seq_next_#in~beg.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_143|) 0)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_129|) 0) |check_seq_next_#in~end.base|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_143|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_129|) 1) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_129|) 0) |check_seq_next_#in~end.offset|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_143| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_143|))) (or (not (= 0 |check_seq_next_#in~beg.offset|)) (not (= |check_seq_next_#in~beg.base| 0))) (or (not (= check_seq_next_~end.offset 0)) (not (= check_seq_next_~end.base 0))) (= check_seq_next_~end.base |check_seq_next_#in~end.base|) (<= (+ 4 |check_seq_next_#in~beg.offset|) (select |#length| |check_seq_next_#in~beg.base|)) (= check_seq_next_~beg.base (select (select |#memory_$Pointer$.base| |check_seq_next_#in~beg.base|) |check_seq_next_#in~beg.offset|)) (or (not (= check_seq_next_~beg.offset 0)) (not (= check_seq_next_~beg.base 0))) (= (select (select |#memory_$Pointer$.offset| |check_seq_next_#in~beg.base|) |check_seq_next_#in~beg.offset|) check_seq_next_~beg.offset) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_60| Int)) (and (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_60|) (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_60|)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_60|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_60|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_60|) 0) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_60| 0)))) (or (not (= check_seq_next_~end.offset check_seq_next_~beg.offset)) (not (= check_seq_next_~beg.base check_seq_next_~end.base))) (= |#NULL.offset| 0) (not (= (select |#valid| check_seq_next_~beg.base) 1)) (= (select |#valid| |check_seq_next_#in~beg.base|) 1) (<= 0 |check_seq_next_#in~beg.offset|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:38:36,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:38:36,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:38:36,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 60 [2022-11-03 03:38:36,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518020100] [2022-11-03 03:38:36,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:38:36,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-03 03:38:36,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:36,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-03 03:38:36,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=8379, Unknown=15, NotChecked=184, Total=8930 [2022-11-03 03:38:36,571 INFO L87 Difference]: Start difference. First operand 211 states and 250 transitions. Second operand has 60 states, 46 states have (on average 1.8695652173913044) internal successors, (86), 55 states have internal predecessors, (86), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 03:38:37,503 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3694 (Array Int Int)) (v_ArrVal_3695 (Array Int Int)) (v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3694) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3697)) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_3695) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3696)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_3676 (Array Int Int)) (v_ArrVal_3677 (Array Int Int)) (v_ArrVal_3673 Int)) (and (= |c_#memory_$Pointer$.base| (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_3676 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3676) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|)))) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| v_ArrVal_3673)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (let ((.cse1 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_3677 0 (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_3677) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse1 |c_chain_node_#in~ppnode#1.base| (store (select .cse1 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0))) |c_#memory_$Pointer$.offset|) (= (select |c_#valid| |chain_node_~node~0#1.base|) 1) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0)))) is different from true [2022-11-03 03:38:46,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:46,519 INFO L93 Difference]: Finished difference Result 262 states and 314 transitions. [2022-11-03 03:38:46,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-03 03:38:46,520 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 46 states have (on average 1.8695652173913044) internal successors, (86), 55 states have internal predecessors, (86), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2022-11-03 03:38:46,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:46,521 INFO L225 Difference]: With dead ends: 262 [2022-11-03 03:38:46,521 INFO L226 Difference]: Without dead ends: 262 [2022-11-03 03:38:46,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3560 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=607, Invalid=14625, Unknown=28, NotChecked=490, Total=15750 [2022-11-03 03:38:46,524 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 49 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 3278 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 4526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1188 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:46,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 2651 Invalid, 4526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3278 Invalid, 0 Unknown, 1188 Unchecked, 4.5s Time] [2022-11-03 03:38:46,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-03 03:38:46,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 237. [2022-11-03 03:38:46,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 164 states have (on average 1.4146341463414633) internal successors, (232), 209 states have internal predecessors, (232), 30 states have call successors, (30), 9 states have call predecessors, (30), 8 states have return successors, (23), 18 states have call predecessors, (23), 22 states have call successors, (23) [2022-11-03 03:38:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 285 transitions. [2022-11-03 03:38:46,532 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 285 transitions. Word has length 50 [2022-11-03 03:38:46,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:46,532 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 285 transitions. [2022-11-03 03:38:46,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 46 states have (on average 1.8695652173913044) internal successors, (86), 55 states have internal predecessors, (86), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 03:38:46,533 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 285 transitions. [2022-11-03 03:38:46,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 03:38:46,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:46,534 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:38:46,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-03 03:38:46,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:38:46,757 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:38:46,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:46,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1173686533, now seen corresponding path program 1 times [2022-11-03 03:38:46,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:46,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391501469] [2022-11-03 03:38:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:46,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 03:38:46,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:46,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391501469] [2022-11-03 03:38:46,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391501469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:38:46,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:38:46,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:38:46,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062872003] [2022-11-03 03:38:46,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:38:46,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:38:46,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:38:46,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:38:46,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:38:46,900 INFO L87 Difference]: Start difference. First operand 237 states and 285 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:38:47,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:38:47,637 INFO L93 Difference]: Finished difference Result 295 states and 352 transitions. [2022-11-03 03:38:47,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:38:47,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2022-11-03 03:38:47,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:38:47,639 INFO L225 Difference]: With dead ends: 295 [2022-11-03 03:38:47,639 INFO L226 Difference]: Without dead ends: 295 [2022-11-03 03:38:47,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:38:47,640 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 80 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:38:47,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 657 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:38:47,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-03 03:38:47,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 236. [2022-11-03 03:38:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 164 states have (on average 1.4085365853658536) internal successors, (231), 208 states have internal predecessors, (231), 30 states have call successors, (30), 9 states have call predecessors, (30), 8 states have return successors, (23), 18 states have call predecessors, (23), 22 states have call successors, (23) [2022-11-03 03:38:47,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 284 transitions. [2022-11-03 03:38:47,651 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 284 transitions. Word has length 51 [2022-11-03 03:38:47,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:38:47,652 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 284 transitions. [2022-11-03 03:38:47,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:38:47,660 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 284 transitions. [2022-11-03 03:38:47,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 03:38:47,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:38:47,661 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:38:47,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-03 03:38:47,661 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:38:47,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:38:47,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1173686532, now seen corresponding path program 1 times [2022-11-03 03:38:47,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:38:47,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913446634] [2022-11-03 03:38:47,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:47,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:38:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:38:51,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:38:51,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913446634] [2022-11-03 03:38:51,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913446634] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:38:51,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460806889] [2022-11-03 03:38:51,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:38:51,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:38:51,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:38:51,174 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:38:51,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-03 03:38:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:38:51,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-03 03:38:51,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:38:51,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:38:51,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:38:52,203 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:38:52,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 03:38:52,229 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:38:52,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-03 03:38:52,658 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4032 (Array Int Int)) (v_ArrVal_4033 (Array Int Int)) (v_ArrVal_4034 (Array Int Int)) (v_ArrVal_4035 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4032) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4034) |c_#memory_$Pointer$.offset|) (= |c_#length| (store |c_old(#length)| |chain_node_~node~0#1.base| (select |c_#length| |chain_node_~node~0#1.base|))) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4033) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4035) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-03 03:38:52,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:52,722 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-03 03:38:52,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 53 [2022-11-03 03:38:52,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:52,777 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-03 03:38:52,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 44 [2022-11-03 03:38:52,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:38:52,818 INFO L356 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2022-11-03 03:38:52,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 20 [2022-11-03 03:38:52,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 16 treesize of output 11 [2022-11-03 03:38:52,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:52,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2022-11-03 03:38:53,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:38:53,267 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 03:38:53,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 11 [2022-11-03 03:38:53,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:53,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-03 03:38:53,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:38:56,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:57,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460806889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:38:57,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [115716246] [2022-11-03 03:38:57,278 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2022-11-03 03:38:57,278 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:38:57,279 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:38:57,279 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:38:57,279 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:38:57,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:38:57,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,435 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:38:57,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:38:57,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:38:57,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:38:57,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:38:57,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:57,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:57,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:38:57,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:38:57,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:38:57,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,560 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:38:57,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:38:57,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,620 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:38:57,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:38:57,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:38:57,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,759 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:38:57,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:38:57,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:38:57,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,862 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:38:57,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:38:57,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:38:57,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:38:57,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:38:57,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:57,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,058 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:38:58,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:38:58,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:38:58,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:38:58,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:38:58,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:38:58,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:38:58,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:38:58,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,336 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:38:58,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:38:58,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:38:58,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:58,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:38:58,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:58,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,490 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:38:58,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:38:58,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:58,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:58,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:38:58,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:38:58,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:38:58,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:38:58,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:38:58,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,764 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:38:58,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:38:58,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:58,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:58,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:38:58,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,844 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:38:58,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,923 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:38:58,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:38:58,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,963 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:38:58,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:58,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:58,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:38:59,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:38:59,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:38:59,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,218 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 03:38:59,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 03:38:59,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,365 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 03:38:59,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 03:38:59,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,525 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 03:38:59,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 03:38:59,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,610 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:38:59,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:38:59,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,702 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:38:59,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:38:59,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,802 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:38:59,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:38:59,819 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-03 03:38:59,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:38:59,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:38:59,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:38:59,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:59,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:59,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:38:59,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:38:59,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:38:59,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:38:59,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:38:59,959 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:38:59,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:38:59,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:59,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:39:00,001 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:39:00,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:39:00,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:00,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:39:00,041 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:39:00,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:39:00,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:00,054 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:39:00,088 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:39:00,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:39:00,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:39:00,105 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-03 03:39:00,226 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:39:10,904 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14708#(and (<= 0 |ULTIMATE.start_create_sll_~pp1#1.offset|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp1#1.base|) (<= |ULTIMATE.start_create_sll_#in~pp1#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#p2~0#1.base|) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp2#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#p1~0#1.base|) 1) (= |ULTIMATE.start_main_~#p2~0#1.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) |ULTIMATE.start_main_#t~mem23#1.offset|) (<= (+ |ULTIMATE.start_main_~#p1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#p1~0#1.base|)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#p1~0#1.base|) |ULTIMATE.start_main_~#p1~0#1.offset|) |ULTIMATE.start_main_#t~mem23#1.base|) (<= 0 |ULTIMATE.start_main_~#p1~0#1.base|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_create_sll_#in~pp2#1.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.base|) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (or (not (<= 0 (+ |ULTIMATE.start_main_#t~mem23#1.offset| 4))) (not (<= (+ |ULTIMATE.start_main_#t~mem23#1.offset| 8) (select |#length| |ULTIMATE.start_main_#t~mem23#1.base|)))) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-03 03:39:10,904 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:39:10,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:39:10,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 42 [2022-11-03 03:39:10,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395588788] [2022-11-03 03:39:10,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:39:10,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-03 03:39:10,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:10,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-03 03:39:10,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=5791, Unknown=3, NotChecked=154, Total=6320 [2022-11-03 03:39:10,907 INFO L87 Difference]: Start difference. First operand 236 states and 284 transitions. Second operand has 43 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 41 states have internal predecessors, (78), 7 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-03 03:39:18,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:39:18,345 INFO L93 Difference]: Finished difference Result 390 states and 463 transitions. [2022-11-03 03:39:18,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-03 03:39:18,346 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 41 states have internal predecessors, (78), 7 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 51 [2022-11-03 03:39:18,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:39:18,347 INFO L225 Difference]: With dead ends: 390 [2022-11-03 03:39:18,347 INFO L226 Difference]: Without dead ends: 390 [2022-11-03 03:39:18,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 102 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3300 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=625, Invalid=9881, Unknown=4, NotChecked=202, Total=10712 [2022-11-03 03:39:18,348 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 436 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 3365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 923 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:39:18,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1422 Invalid, 3365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2336 Invalid, 0 Unknown, 923 Unchecked, 3.5s Time] [2022-11-03 03:39:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-11-03 03:39:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 241. [2022-11-03 03:39:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 168 states have (on average 1.4047619047619047) internal successors, (236), 212 states have internal predecessors, (236), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (24), 19 states have call predecessors, (24), 22 states have call successors, (24) [2022-11-03 03:39:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 290 transitions. [2022-11-03 03:39:18,356 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 290 transitions. Word has length 51 [2022-11-03 03:39:18,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:39:18,357 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 290 transitions. [2022-11-03 03:39:18,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 41 states have internal predecessors, (78), 7 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-03 03:39:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 290 transitions. [2022-11-03 03:39:18,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 03:39:18,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:39:18,358 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2022-11-03 03:39:18,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-03 03:39:18,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-03 03:39:18,565 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:39:18,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:39:18,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1317054238, now seen corresponding path program 1 times [2022-11-03 03:39:18,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:39:18,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237143504] [2022-11-03 03:39:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:18,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:39:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:39:20,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:20,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237143504] [2022-11-03 03:39:20,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237143504] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:39:20,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653819146] [2022-11-03 03:39:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:20,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:39:20,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:39:20,418 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:39:20,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-03 03:39:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:20,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-03 03:39:20,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:39:20,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:39:21,143 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:39:21,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-11-03 03:39:21,209 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:39:21,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 8 [2022-11-03 03:39:21,427 WARN L855 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_4318 (Array Int Int)) (v_ArrVal_4319 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4318) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4319)) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|))) is different from true [2022-11-03 03:39:21,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:21,494 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-03 03:39:21,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 45 [2022-11-03 03:39:21,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2022-11-03 03:39:21,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 8 [2022-11-03 03:39:21,886 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4321 (Array Int Int)) (v_ArrVal_4322 (Array Int Int)) (v_ArrVal_4323 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (<= (+ 1 |chain_node_alloc_node_~ptr~0#1.base|) |c_#StackHeapBarrier|) (<= |chain_node_~node~0#1.base| |chain_node_alloc_node_~ptr~0#1.base|) (= (store (store (store |c_old(#memory_$Pointer$.base)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_4321) |chain_node_~node~0#1.base| v_ArrVal_4322) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4323) |c_#memory_$Pointer$.base|))) is different from true [2022-11-03 03:39:21,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:21,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:21,973 INFO L356 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-03 03:39:21,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 46 [2022-11-03 03:39:22,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:39:22,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 8 [2022-11-03 03:39:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 13 refuted. 3 times theorem prover too weak. 4 trivial. 3 not checked. [2022-11-03 03:39:22,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:39:22,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:39:22,336 WARN L833 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_main_~#p1~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|) (forall ((|v_chain_node_alloc_node_~ptr~0#1.base_62| Int) (|v_chain_node_~node~0#1.base_58| Int) (v_ArrVal_4332 (Array Int Int)) (v_ArrVal_4333 (Array Int Int)) (v_ArrVal_4334 (Array Int Int))) (or (not (< |v_chain_node_alloc_node_~ptr~0#1.base_62| |c_#StackHeapBarrier|)) (< |v_chain_node_alloc_node_~ptr~0#1.base_62| |v_chain_node_~node~0#1.base_58|) (not (= (select (select (store (store (store |c_#memory_$Pointer$.base| |v_chain_node_alloc_node_~ptr~0#1.base_62| v_ArrVal_4333) |v_chain_node_~node~0#1.base_58| v_ArrVal_4332) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_4334) |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|) 0))))) is different from false [2022-11-03 03:39:22,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653819146] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:39:22,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [944561504] [2022-11-03 03:39:22,340 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-03 03:39:22,341 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:39:22,341 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:39:22,341 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:39:22,341 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:39:22,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:39:22,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,488 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:39:22,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:39:22,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:39:22,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:39:22,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:39:22,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:39:22,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:39:22,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:39:22,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:39:22,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:39:22,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:39:22,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,616 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:39:22,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:39:22,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,668 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:39:22,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:39:22,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:39:22,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,779 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:39:22,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:39:22,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,856 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:39:22,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:39:22,890 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:39:22,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:39:22,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:39:22,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,054 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:39:23,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:39:23,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:39:23,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:39:23,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:39:23,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:39:23,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:39:23,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:39:23,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,316 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:39:23,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:39:23,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:39:23,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:39:23,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,385 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:39:23,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:39:23,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,503 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:39:23,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:39:23,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:39:23,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:39:23,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:39:23,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:39:23,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:39:23,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:39:23,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:39:23,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,792 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:39:23,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:39:23,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:39:23,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:39:23,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:39:23,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:39:23,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,973 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:39:23,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:39:24,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:39:24,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:39:24,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:39:24,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:39:24,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,177 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:39:24,177 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:39:24,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,258 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:39:24,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:39:24,499 INFO L356 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-03 03:39:24,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 259 treesize of output 248 [2022-11-03 03:39:24,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:39:24,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:24,978 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 03:39:24,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 03:39:25,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:25,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:25,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:25,065 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:39:25,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:39:25,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:25,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:25,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:25,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:25,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:25,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:25,167 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:39:25,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:39:25,183 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 94 for LOIs [2022-11-03 03:39:25,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:39:25,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:39:25,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:39:25,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:39:25,368 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:39:25,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:25,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:39:25,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:25,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:39:25,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:39:25,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:25,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:39:25,661 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:39:25,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:39:25,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:25,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:39:25,757 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:39:25,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:39:25,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:39:25,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:39:25,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:25,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:39:25,954 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:39:25,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:39:26,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:26,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:39:26,024 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:39:26,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:39:26,036 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-03 03:39:26,082 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 60 for LOIs [2022-11-03 03:39:26,094 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:39:35,331 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15653#(and (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_154| Int) (|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_172| Int)) (and (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_154| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_154| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_172|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_154|) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_172|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_172|) 1) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_172|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_172|) 0) 0) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_154| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_154|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_154|) 1) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_172|)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_154|)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_172|) 0) 0) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_172| 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_172| 2)))) (= |#NULL.offset| 0) (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_68| Int)) (and (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_68|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_68|) 0) (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_68|)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_68|)) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_68| 0)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_68|))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:39:35,331 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:39:35,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:39:35,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24] total 33 [2022-11-03 03:39:35,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52334960] [2022-11-03 03:39:35,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:39:35,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-03 03:39:35,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:39:35,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-03 03:39:35,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2641, Unknown=23, NotChecked=318, Total=3192 [2022-11-03 03:39:35,333 INFO L87 Difference]: Start difference. First operand 241 states and 290 transitions. Second operand has 33 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 31 states have internal predecessors, (62), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-03 03:39:37,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:39:37,160 INFO L93 Difference]: Finished difference Result 277 states and 329 transitions. [2022-11-03 03:39:37,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 03:39:37,161 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 31 states have internal predecessors, (62), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) Word has length 54 [2022-11-03 03:39:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:39:37,162 INFO L225 Difference]: With dead ends: 277 [2022-11-03 03:39:37,162 INFO L226 Difference]: Without dead ends: 277 [2022-11-03 03:39:37,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 85 SyntacticMatches, 6 SemanticMatches, 69 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1357 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=327, Invalid=4208, Unknown=33, NotChecked=402, Total=4970 [2022-11-03 03:39:37,163 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 54 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 692 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:39:37,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1741 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 731 Invalid, 0 Unknown, 692 Unchecked, 0.8s Time] [2022-11-03 03:39:37,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-03 03:39:37,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 259. [2022-11-03 03:39:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 184 states have (on average 1.4076086956521738) internal successors, (259), 228 states have internal predecessors, (259), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (24), 19 states have call predecessors, (24), 22 states have call successors, (24) [2022-11-03 03:39:37,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 313 transitions. [2022-11-03 03:39:37,171 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 313 transitions. Word has length 54 [2022-11-03 03:39:37,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:39:37,172 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 313 transitions. [2022-11-03 03:39:37,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 31 states have internal predecessors, (62), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-03 03:39:37,172 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 313 transitions. [2022-11-03 03:39:37,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 03:39:37,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:39:37,173 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:39:37,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-03 03:39:37,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-03 03:39:37,389 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:39:37,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:39:37,389 INFO L85 PathProgramCache]: Analyzing trace with hash 33494336, now seen corresponding path program 1 times [2022-11-03 03:39:37,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:39:37,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544344425] [2022-11-03 03:39:37,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:37,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:39:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:39:47,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:39:47,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544344425] [2022-11-03 03:39:47,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544344425] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:39:47,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507779138] [2022-11-03 03:39:47,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:39:47,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:39:47,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:39:47,689 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:39:47,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-03 03:39:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:39:48,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-03 03:39:48,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:39:48,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:39:48,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:39:48,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-03 03:39:48,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-03 03:39:48,743 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-03 03:39:48,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-11-03 03:39:48,776 INFO L356 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2022-11-03 03:39:48,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 03:39:49,384 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:39:49,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 43 [2022-11-03 03:39:49,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:49,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:49,414 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:39:49,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 34 treesize of output 32 [2022-11-03 03:39:49,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:49,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:49,604 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:39:49,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 10 [2022-11-03 03:39:49,614 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:39:49,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 18 [2022-11-03 03:39:49,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:39:50,235 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4555 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_4556 (Array Int Int)) (v_ArrVal_4557 (Array Int Int)) (v_ArrVal_4558 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4555) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4557)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4556) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4558) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-03 03:39:50,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:50,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:50,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:50,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:50,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:50,294 INFO L356 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-03 03:39:50,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 54 [2022-11-03 03:39:50,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:50,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:50,354 INFO L356 Elim1Store]: treesize reduction 56, result has 29.1 percent of original size [2022-11-03 03:39:50,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 80 [2022-11-03 03:39:50,372 INFO L356 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-11-03 03:39:50,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 13 [2022-11-03 03:39:50,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:39:50,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 25 [2022-11-03 03:39:50,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:39:50,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:39:51,093 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 03:39:51,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 11 [2022-11-03 03:39:52,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:39:52,210 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:39:52,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 38 [2022-11-03 03:39:52,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:52,222 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-03 03:39:52,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-11-03 03:39:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-03 03:39:52,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:40:00,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:40:01,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507779138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:40:01,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [126544431] [2022-11-03 03:40:01,138 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2022-11-03 03:40:01,138 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:40:01,139 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:40:01,139 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:40:01,139 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:40:01,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,187 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:40:01,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,279 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:40:01,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:40:01,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:40:01,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:40:01,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:40:01,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:40:01,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:40:01,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:40:01,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:40:01,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:40:01,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:40:01,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,413 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:40:01,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:40:01,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,467 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:40:01,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:40:01,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,538 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:40:01,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:40:01,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,640 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:40:01,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:40:01,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:40:01,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:40:01,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:40:01,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:40:01,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,819 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:40:01,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:40:01,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:40:01,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:40:01,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:40:01,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:40:01,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:40:01,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:01,997 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:40:02,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,074 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:40:02,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:40:02,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:02,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:40:02,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:02,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:40:02,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,234 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:40:02,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:40:02,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:02,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:40:02,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:40:02,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:02,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:40:02,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:40:02,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:40:02,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,497 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:40:02,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:40:02,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:40:02,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:02,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:40:02,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:02,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,685 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:40:02,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:40:02,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:02,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:40:02,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:02,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:40:02,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:40:02,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:02,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,023 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 03:40:03,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 03:40:03,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,188 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 03:40:03,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 03:40:03,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,364 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 03:40:03,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 03:40:03,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,449 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:40:03,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:40:03,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,535 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:40:03,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:40:03,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,652 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:40:03,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:40:03,671 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-03 03:40:03,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:40:03,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:40:03,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:40:03,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:40:03,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:40:03,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:40:03,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:40:03,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,736 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:40:03,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:40:03,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:40:03,796 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:40:03,796 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:40:03,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:40:03,840 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:40:03,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:40:03,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:40:03,880 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:40:03,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:40:03,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:40:03,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:03,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:40:03,922 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:40:03,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:40:03,929 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-03 03:40:04,058 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 45 for LOIs [2022-11-03 03:40:04,069 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:40:17,382 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16527#(and (= |#NULL.offset| 0) (or (exists ((|v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196| Int)) (and (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|) 0) 8) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|) 0))) (= (select |#valid| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|) 1) (<= 4 (select |#length| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|)) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|) 0)) 1) (<= 0 (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|) 0) 4)) (not (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|) 0)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|) 0) 4)) 0)) (<= 0 |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|))) (exists ((|v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196| Int)) (and (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|) 0) 8) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|) 0))) (not (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|) 0)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|) 0) 4)) 0)) (= (select |#valid| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|) 1) (<= 4 (select |#length| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|)) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|) 0)) 1) (<= 0 (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|) 0) 4)) (<= 0 |v_ULTIMATE.start_main_~#p1~0#1.base_BEFORE_CALL_196|)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:40:17,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:40:17,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:40:17,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 25] total 55 [2022-11-03 03:40:17,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212516461] [2022-11-03 03:40:17,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:40:17,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-03 03:40:17,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:17,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-03 03:40:17,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=8132, Unknown=25, NotChecked=182, Total=8742 [2022-11-03 03:40:17,384 INFO L87 Difference]: Start difference. First operand 259 states and 313 transitions. Second operand has 55 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 52 states have internal predecessors, (88), 8 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-03 03:40:26,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:26,427 INFO L93 Difference]: Finished difference Result 283 states and 339 transitions. [2022-11-03 03:40:26,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-03 03:40:26,428 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 52 states have internal predecessors, (88), 8 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 54 [2022-11-03 03:40:26,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:26,429 INFO L225 Difference]: With dead ends: 283 [2022-11-03 03:40:26,429 INFO L226 Difference]: Without dead ends: 283 [2022-11-03 03:40:26,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4161 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=619, Invalid=12013, Unknown=28, NotChecked=222, Total=12882 [2022-11-03 03:40:26,430 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 140 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 3317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 871 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:26,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 2083 Invalid, 3317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2334 Invalid, 0 Unknown, 871 Unchecked, 3.7s Time] [2022-11-03 03:40:26,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-11-03 03:40:26,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 260. [2022-11-03 03:40:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 185 states have (on average 1.4054054054054055) internal successors, (260), 229 states have internal predecessors, (260), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (24), 19 states have call predecessors, (24), 22 states have call successors, (24) [2022-11-03 03:40:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 314 transitions. [2022-11-03 03:40:26,438 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 314 transitions. Word has length 54 [2022-11-03 03:40:26,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:26,438 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 314 transitions. [2022-11-03 03:40:26,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 52 states have internal predecessors, (88), 8 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-03 03:40:26,439 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 314 transitions. [2022-11-03 03:40:26,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 03:40:26,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:26,440 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2022-11-03 03:40:26,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-03 03:40:26,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:40:26,653 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:40:26,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:26,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1315305388, now seen corresponding path program 1 times [2022-11-03 03:40:26,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:26,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432889224] [2022-11-03 03:40:26,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:26,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:40:29,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:29,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432889224] [2022-11-03 03:40:29,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432889224] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:40:29,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136642612] [2022-11-03 03:40:29,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:29,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:40:29,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:40:29,846 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:40:29,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-03 03:40:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:30,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 108 conjunts are in the unsatisfiable core [2022-11-03 03:40:30,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:40:30,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:40:30,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:40:30,636 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:40:30,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-11-03 03:40:30,740 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:40:30,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 8 [2022-11-03 03:40:30,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 03:40:30,996 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4840 (Array Int Int)) (v_ArrVal_4841 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4840) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4841) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-11-03 03:40:31,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:31,064 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-03 03:40:31,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 29 treesize of output 45 [2022-11-03 03:40:31,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2022-11-03 03:40:31,103 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 03:40:31,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 03:40:31,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-03 03:40:31,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 8 [2022-11-03 03:40:31,649 WARN L855 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_4845 (Array Int Int)) (v_ArrVal_4846 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4845) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4846)) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|))) is different from true [2022-11-03 03:40:31,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:31,725 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 03:40:31,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2022-11-03 03:40:31,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 8 [2022-11-03 03:40:32,099 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4850 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (|chain_node_alloc_node_~ptr~0#1.base| Int) (v_ArrVal_4848 (Array Int Int)) (v_ArrVal_4849 (Array Int Int))) (and (<= (+ 1 |chain_node_alloc_node_~ptr~0#1.base|) |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store (store |c_old(#memory_$Pointer$.base)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_4848) |chain_node_~node~0#1.base| v_ArrVal_4849) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4850)) (<= |chain_node_~node~0#1.base| |chain_node_alloc_node_~ptr~0#1.base|))) is different from true [2022-11-03 03:40:32,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,167 INFO L356 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-03 03:40:32,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 46 [2022-11-03 03:40:32,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:40:32,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 8 [2022-11-03 03:40:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 29 refuted. 3 times theorem prover too weak. 4 trivial. 6 not checked. [2022-11-03 03:40:32,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:40:32,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:40:32,587 WARN L833 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_main_~#p2~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|) (forall ((v_ArrVal_4860 (Array Int Int)) (|v_chain_node_alloc_node_~ptr~0#1.base_68| Int) (v_ArrVal_4861 (Array Int Int)) (|v_chain_node_~node~0#1.base_64| Int) (v_ArrVal_4859 (Array Int Int))) (or (not (< |v_chain_node_alloc_node_~ptr~0#1.base_68| |c_#StackHeapBarrier|)) (not (= (select (select (store (store (store |c_#memory_$Pointer$.base| |v_chain_node_alloc_node_~ptr~0#1.base_68| v_ArrVal_4861) |v_chain_node_~node~0#1.base_64| v_ArrVal_4860) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_4859) |c_ULTIMATE.start_main_~#p2~0#1.base|) |c_ULTIMATE.start_main_~#p2~0#1.offset|) 0)) (< |v_chain_node_alloc_node_~ptr~0#1.base_68| |v_chain_node_~node~0#1.base_64|)))) is different from false [2022-11-03 03:40:32,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136642612] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:40:32,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1609735560] [2022-11-03 03:40:32,590 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-03 03:40:32,591 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:40:32,591 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:40:32,591 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:40:32,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:40:32,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 03:40:32,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,730 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:40:32,730 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:40:32,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:40:32,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:40:32,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:40:32,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:40:32,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:40:32,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:40:32,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:40:32,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:40:32,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,868 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:40:32,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:40:32,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:32,919 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 03:40:32,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 03:40:32,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:40:32,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,019 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 03:40:33,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 03:40:33,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,090 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 03:40:33,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 03:40:33,104 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:40:33,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:40:33,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:40:33,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:40:33,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,263 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:40:33,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:40:33,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:40:33,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:40:33,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:40:33,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:40:33,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:40:33,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:40:33,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,533 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:40:33,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:40:33,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:33,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:40:33,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,597 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:33,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:40:33,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,698 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:40:33,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:40:33,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:33,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:40:33,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:33,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:40:33,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:40:33,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:40:33,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:40:33,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:33,966 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:40:33,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:40:34,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:34,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:40:34,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:40:34,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:34,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,133 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:40:34,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:40:34,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-03 03:40:34,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 15 treesize of output 11 [2022-11-03 03:40:34,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:34,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2022-11-03 03:40:34,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,323 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:40:34,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:40:34,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:34,425 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:40:34,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:40:34,637 INFO L356 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-03 03:40:34,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 259 treesize of output 248 [2022-11-03 03:40:34,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:40:35,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,146 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 03:40:35,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 03:40:35,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,250 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 03:40:35,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 03:40:35,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,366 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:40:35,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 03:40:35,383 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 94 for LOIs [2022-11-03 03:40:35,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:40:35,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:40:35,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:40:35,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2022-11-03 03:40:35,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:40:35,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:40:35,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 03:40:35,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2022-11-03 03:40:35,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:40:35,837 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:40:35,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:40:35,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:35,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:40:35,919 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 03:40:35,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 03:40:35,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:40:36,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 03:40:36,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:36,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:40:36,120 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 03:40:36,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 03:40:36,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:36,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:40:36,173 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 03:40:36,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:40:36,204 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-03 03:40:36,314 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 75 for LOIs [2022-11-03 03:40:36,344 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:40:47,020 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17398#(and (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_76| Int)) (and (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_76|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_76|) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_76| 0)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_76|) 0) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_76|)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_76|))) (= |#NULL.offset| 0) (or (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180| Int)) (and (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201| Int)) (and (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201|) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201|) 0) 0)) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201| 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201|)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201|) 1))) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180|) 1) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180| 0)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180|) 0) 0) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180|) 0) 0) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180|)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180| 2)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180|))) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180| Int)) (and (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201| Int)) (and (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201|) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201| 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201|)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201|)) (not (= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201|) 0))) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_201|) 1))) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180|) 1) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180| 0)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180|) 0) 0) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180|) 0) 0) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180|)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180| 2)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_180|)))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:40:47,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:40:47,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:40:47,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 31] total 45 [2022-11-03 03:40:47,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498806948] [2022-11-03 03:40:47,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 03:40:47,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-03 03:40:47,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:40:47,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-03 03:40:47,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=3990, Unknown=40, NotChecked=524, Total=4830 [2022-11-03 03:40:47,022 INFO L87 Difference]: Start difference. First operand 260 states and 314 transitions. Second operand has 45 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 41 states have internal predecessors, (69), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-03 03:40:50,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:40:50,131 INFO L93 Difference]: Finished difference Result 291 states and 350 transitions. [2022-11-03 03:40:50,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 03:40:50,131 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 41 states have internal predecessors, (69), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 56 [2022-11-03 03:40:50,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:40:50,132 INFO L225 Difference]: With dead ends: 291 [2022-11-03 03:40:50,132 INFO L226 Difference]: Without dead ends: 291 [2022-11-03 03:40:50,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 86 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2106 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=410, Invalid=5561, Unknown=51, NotChecked=620, Total=6642 [2022-11-03 03:40:50,134 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 160 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 2429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 957 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:40:50,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1397 Invalid, 2429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1414 Invalid, 0 Unknown, 957 Unchecked, 1.8s Time] [2022-11-03 03:40:50,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-03 03:40:50,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 280. [2022-11-03 03:40:50,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 201 states have (on average 1.407960199004975) internal successors, (283), 247 states have internal predecessors, (283), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (27), 20 states have call predecessors, (27), 25 states have call successors, (27) [2022-11-03 03:40:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 343 transitions. [2022-11-03 03:40:50,142 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 343 transitions. Word has length 56 [2022-11-03 03:40:50,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:40:50,142 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 343 transitions. [2022-11-03 03:40:50,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 41 states have internal predecessors, (69), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-03 03:40:50,143 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 343 transitions. [2022-11-03 03:40:50,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 03:40:50,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:40:50,144 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:40:50,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-03 03:40:50,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:40:50,365 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 03:40:50,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:40:50,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1038208482, now seen corresponding path program 1 times [2022-11-03 03:40:50,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:40:50,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939520811] [2022-11-03 03:40:50,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:50,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:40:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:40:54,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:40:54,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939520811] [2022-11-03 03:40:54,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939520811] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:40:54,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073948519] [2022-11-03 03:40:54,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:40:54,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:40:54,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:40:54,114 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:40:54,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a85d0203-eb9f-493d-b52f-b3225c670b16/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-03 03:40:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:40:54,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-03 03:40:54,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:40:54,559 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-03 03:40:54,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-03 03:40:54,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:40:54,805 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-03 03:40:54,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 15 [2022-11-03 03:40:55,122 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:40:55,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2022-11-03 03:40:55,231 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:40:55,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 [2022-11-03 03:40:56,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:56,417 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-03 03:40:56,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 52 [2022-11-03 03:40:56,438 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-03 03:40:56,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 03:40:56,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 15 [2022-11-03 03:40:56,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2022-11-03 03:40:56,788 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:40:56,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 33 [2022-11-03 03:40:56,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2022-11-03 03:40:57,054 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:40:57,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 63 [2022-11-03 03:40:57,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 52 treesize of output 40 [2022-11-03 03:40:58,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:40:58,191 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 03:40:58,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 55 [2022-11-03 03:40:58,283 INFO L356 Elim1Store]: treesize reduction 38, result has 59.6 percent of original size [2022-11-03 03:40:58,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 89 [2022-11-03 03:40:59,854 INFO L356 Elim1Store]: treesize reduction 58, result has 72.1 percent of original size [2022-11-03 03:40:59,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 73 treesize of output 207