./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0214.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0214.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7 --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 3f6f146d76d903376288fe056dbbc9e1a8443f92d5e8b82343734efc8a9842e4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:53:48,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:53:48,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:53:48,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:53:48,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:53:48,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:53:48,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:53:48,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:53:48,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:53:48,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:53:48,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:53:48,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:53:48,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:53:48,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:53:48,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:53:48,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:53:48,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:53:48,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:53:48,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:53:48,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:53:48,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:53:48,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:53:48,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:53:48,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:53:48,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:53:48,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:53:48,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:53:48,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:53:48,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:53:48,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:53:48,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:53:48,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:53:48,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:53:48,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:53:48,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:53:48,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:53:48,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:53:48,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:53:48,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:53:48,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:53:48,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:53:48,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-25 19:53:48,335 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:53:48,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:53:48,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:53:48,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:53:48,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:53:48,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:53:48,338 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:53:48,338 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:53:48,338 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:53:48,339 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:53:48,339 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:53:48,339 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:53:48,339 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:53:48,340 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:53:48,340 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:53:48,340 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:53:48,341 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:53:48,341 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:53:48,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 19:53:48,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 19:53:48,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:53:48,343 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:53:48,343 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:53:48,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:53:48,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:53:48,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:53:48,344 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 19:53:48,344 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 19:53:48,345 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 19:53:48,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:53:48,345 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:53:48,346 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:53:48,346 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:53:48,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:53:48,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:53:48,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:53:48,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:53:48,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:53:48,348 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:53:48,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:53:48,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:53:48,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:53:48,349 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f6f146d76d903376288fe056dbbc9e1a8443f92d5e8b82343734efc8a9842e4 [2021-11-25 19:53:48,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:53:48,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:53:48,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:53:48,748 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:53:48,749 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:53:48,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/memsafety/test-0214.i [2021-11-25 19:53:48,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/data/b4055e149/59ebbe987b31407cb00be7f9969b6613/FLAGae65bffc1 [2021-11-25 19:53:49,582 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:53:49,585 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/sv-benchmarks/c/memsafety/test-0214.i [2021-11-25 19:53:49,628 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/data/b4055e149/59ebbe987b31407cb00be7f9969b6613/FLAGae65bffc1 [2021-11-25 19:53:49,753 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/data/b4055e149/59ebbe987b31407cb00be7f9969b6613 [2021-11-25 19:53:49,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:53:49,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:53:49,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:53:49,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:53:49,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:53:49,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:53:49" (1/1) ... [2021-11-25 19:53:49,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30819bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:49, skipping insertion in model container [2021-11-25 19:53:49,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:53:49" (1/1) ... [2021-11-25 19:53:49,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:53:49,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:53:50,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:53:50,425 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:53:50,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:53:50,535 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:53:50,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:50 WrapperNode [2021-11-25 19:53:50,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:53:50,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:53:50,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:53:50,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:53:50,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:50" (1/1) ... [2021-11-25 19:53:50,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:50" (1/1) ... [2021-11-25 19:53:50,623 INFO L137 Inliner]: procedures = 181, calls = 42, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 181 [2021-11-25 19:53:50,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:53:50,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:53:50,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:53:50,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:53:50,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:50" (1/1) ... [2021-11-25 19:53:50,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:50" (1/1) ... [2021-11-25 19:53:50,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:50" (1/1) ... [2021-11-25 19:53:50,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:50" (1/1) ... [2021-11-25 19:53:50,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:50" (1/1) ... [2021-11-25 19:53:50,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:50" (1/1) ... [2021-11-25 19:53:50,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:50" (1/1) ... [2021-11-25 19:53:50,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:53:50,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:53:50,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:53:50,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:53:50,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:50" (1/1) ... [2021-11-25 19:53:50,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:53:50,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:53:50,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:53:50,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:53:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure rand_end_point [2021-11-25 19:53:50,822 INFO L138 BoogieDeclarations]: Found implementation of procedure rand_end_point [2021-11-25 19:53:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:53:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:53:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:53:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:53:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:53:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:53:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:53:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:53:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:53:50,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:53:51,003 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:53:51,006 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:53:51,615 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:53:51,809 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:53:51,809 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-25 19:53:51,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:53:51 BoogieIcfgContainer [2021-11-25 19:53:51,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:53:51,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:53:51,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:53:51,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:53:51,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:53:49" (1/3) ... [2021-11-25 19:53:51,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b873ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:53:51, skipping insertion in model container [2021-11-25 19:53:51,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:53:50" (2/3) ... [2021-11-25 19:53:51,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b873ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:53:51, skipping insertion in model container [2021-11-25 19:53:51,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:53:51" (3/3) ... [2021-11-25 19:53:51,823 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0214.i [2021-11-25 19:53:51,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:53:51,832 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2021-11-25 19:53:51,894 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:53:51,902 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:53:51,903 INFO L340 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2021-11-25 19:53:51,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 116 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:53:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 19:53:51,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:53:51,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 19:53:51,935 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:53:51,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:53:51,943 INFO L85 PathProgramCache]: Analyzing trace with hash 9036666, now seen corresponding path program 1 times [2021-11-25 19:53:51,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:53:51,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065073464] [2021-11-25 19:53:51,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:53:51,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:52,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:53:52,130 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:52,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065073464] [2021-11-25 19:53:52,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065073464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:52,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:52,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:53:52,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874414479] [2021-11-25 19:53:52,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:52,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:53:52,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:52,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:53:52,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:53:52,186 INFO L87 Difference]: Start difference. First operand has 120 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 116 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-25 19:53:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:53:52,260 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2021-11-25 19:53:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:53:52,263 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-11-25 19:53:52,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:53:52,274 INFO L225 Difference]: With dead ends: 120 [2021-11-25 19:53:52,274 INFO L226 Difference]: Without dead ends: 119 [2021-11-25 19:53:52,277 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:53:52,282 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:53:52,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:53:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-25 19:53:52,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-25 19:53:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 59 states have (on average 2.135593220338983) internal successors, (126), 115 states have internal predecessors, (126), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:53:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 130 transitions. [2021-11-25 19:53:52,343 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 130 transitions. Word has length 4 [2021-11-25 19:53:52,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:53:52,343 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 130 transitions. [2021-11-25 19:53:52,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-25 19:53:52,344 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 130 transitions. [2021-11-25 19:53:52,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:53:52,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:53:52,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:53:52,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:53:52,346 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:53:52,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:53:52,347 INFO L85 PathProgramCache]: Analyzing trace with hash 273773907, now seen corresponding path program 1 times [2021-11-25 19:53:52,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:53:52,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726500] [2021-11-25 19:53:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:53:52,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:53:52,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:52,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726500] [2021-11-25 19:53:52,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:52,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:52,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 19:53:52,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132477157] [2021-11-25 19:53:52,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:52,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:53:52,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:52,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:53:52,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:53:52,484 INFO L87 Difference]: Start difference. First operand 119 states and 130 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-25 19:53:52,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:53:52,767 INFO L93 Difference]: Finished difference Result 231 states and 252 transitions. [2021-11-25 19:53:52,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:53:52,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-25 19:53:52,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:53:52,772 INFO L225 Difference]: With dead ends: 231 [2021-11-25 19:53:52,772 INFO L226 Difference]: Without dead ends: 231 [2021-11-25 19:53:52,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:53:52,775 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 114 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:53:52,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 136 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:53:52,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-25 19:53:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 154. [2021-11-25 19:53:52,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 91 states have (on average 2.098901098901099) internal successors, (191), 147 states have internal predecessors, (191), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:53:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 199 transitions. [2021-11-25 19:53:52,802 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 199 transitions. Word has length 5 [2021-11-25 19:53:52,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:53:52,802 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 199 transitions. [2021-11-25 19:53:52,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-25 19:53:52,803 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 199 transitions. [2021-11-25 19:53:52,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:53:52,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:53:52,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:53:52,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:53:52,805 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:53:52,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:53:52,806 INFO L85 PathProgramCache]: Analyzing trace with hash 273773908, now seen corresponding path program 1 times [2021-11-25 19:53:52,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:53:52,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004499270] [2021-11-25 19:53:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:53:52,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:53:53,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:53,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004499270] [2021-11-25 19:53:53,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004499270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:53,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:53,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:53:53,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758855383] [2021-11-25 19:53:53,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:53,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:53:53,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:53,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:53:53,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:53:53,062 INFO L87 Difference]: Start difference. First operand 154 states and 199 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-25 19:53:53,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:53:53,422 INFO L93 Difference]: Finished difference Result 260 states and 325 transitions. [2021-11-25 19:53:53,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:53:53,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-25 19:53:53,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:53:53,430 INFO L225 Difference]: With dead ends: 260 [2021-11-25 19:53:53,431 INFO L226 Difference]: Without dead ends: 260 [2021-11-25 19:53:53,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:53:53,441 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 104 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:53:53,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 243 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:53:53,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-25 19:53:53,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 212. [2021-11-25 19:53:53,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 143 states have (on average 2.020979020979021) internal successors, (289), 201 states have internal predecessors, (289), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 19:53:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 305 transitions. [2021-11-25 19:53:53,502 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 305 transitions. Word has length 5 [2021-11-25 19:53:53,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:53:53,503 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 305 transitions. [2021-11-25 19:53:53,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-25 19:53:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 305 transitions. [2021-11-25 19:53:53,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 19:53:53,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:53:53,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:53:53,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:53:53,505 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:53:53,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:53:53,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1103762203, now seen corresponding path program 1 times [2021-11-25 19:53:53,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:53:53,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888592017] [2021-11-25 19:53:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:53:53,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:53:53,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:53,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888592017] [2021-11-25 19:53:53,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888592017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:53,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:53,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 19:53:53,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533157676] [2021-11-25 19:53:53,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:53,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:53:53,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:53,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:53:53,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:53:53,562 INFO L87 Difference]: Start difference. First operand 212 states and 305 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-25 19:53:53,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:53:53,737 INFO L93 Difference]: Finished difference Result 271 states and 361 transitions. [2021-11-25 19:53:53,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:53:53,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-11-25 19:53:53,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:53:53,742 INFO L225 Difference]: With dead ends: 271 [2021-11-25 19:53:53,743 INFO L226 Difference]: Without dead ends: 270 [2021-11-25 19:53:53,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:53:53,745 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 70 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:53:53,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 158 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:53:53,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-25 19:53:53,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 213. [2021-11-25 19:53:53,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 144 states have (on average 2.013888888888889) internal successors, (290), 202 states have internal predecessors, (290), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 19:53:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 306 transitions. [2021-11-25 19:53:53,764 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 306 transitions. Word has length 7 [2021-11-25 19:53:53,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:53:53,764 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 306 transitions. [2021-11-25 19:53:53,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-25 19:53:53,765 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 306 transitions. [2021-11-25 19:53:53,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 19:53:53,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:53:53,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:53:53,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:53:53,767 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:53:53,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:53:53,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1103760856, now seen corresponding path program 1 times [2021-11-25 19:53:53,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:53:53,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558711571] [2021-11-25 19:53:53,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:53:53,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:53:54,180 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:54,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558711571] [2021-11-25 19:53:54,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558711571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:54,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:54,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:53:54,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290539097] [2021-11-25 19:53:54,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:54,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:53:54,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:54,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:53:54,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:53:54,187 INFO L87 Difference]: Start difference. First operand 213 states and 306 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-25 19:53:54,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:53:54,507 INFO L93 Difference]: Finished difference Result 285 states and 386 transitions. [2021-11-25 19:53:54,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:53:54,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-11-25 19:53:54,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:53:54,510 INFO L225 Difference]: With dead ends: 285 [2021-11-25 19:53:54,510 INFO L226 Difference]: Without dead ends: 282 [2021-11-25 19:53:54,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:53:54,512 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 140 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:53:54,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 255 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:53:54,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-25 19:53:54,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 243. [2021-11-25 19:53:54,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 171 states have (on average 2.0) internal successors, (342), 230 states have internal predecessors, (342), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:53:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 362 transitions. [2021-11-25 19:53:54,527 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 362 transitions. Word has length 7 [2021-11-25 19:53:54,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:53:54,527 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 362 transitions. [2021-11-25 19:53:54,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-25 19:53:54,528 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 362 transitions. [2021-11-25 19:53:54,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 19:53:54,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:53:54,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:53:54,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:53:54,530 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:53:54,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:53:54,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1231512253, now seen corresponding path program 1 times [2021-11-25 19:53:54,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:53:54,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498937996] [2021-11-25 19:53:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:53:54,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:53:54,612 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:54,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498937996] [2021-11-25 19:53:54,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498937996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:54,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:54,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:53:54,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457081736] [2021-11-25 19:53:54,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:54,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:53:54,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:54,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:53:54,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:53:54,616 INFO L87 Difference]: Start difference. First operand 243 states and 362 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-25 19:53:54,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:53:54,971 INFO L93 Difference]: Finished difference Result 359 states and 451 transitions. [2021-11-25 19:53:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:53:54,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2021-11-25 19:53:54,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:53:54,975 INFO L225 Difference]: With dead ends: 359 [2021-11-25 19:53:54,975 INFO L226 Difference]: Without dead ends: 359 [2021-11-25 19:53:54,975 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:53:54,977 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 212 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:53:54,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 231 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:53:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-11-25 19:53:54,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 243. [2021-11-25 19:53:54,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 171 states have (on average 1.9649122807017543) internal successors, (336), 230 states have internal predecessors, (336), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:53:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 356 transitions. [2021-11-25 19:53:54,997 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 356 transitions. Word has length 10 [2021-11-25 19:53:54,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:53:54,998 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 356 transitions. [2021-11-25 19:53:54,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-25 19:53:54,998 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 356 transitions. [2021-11-25 19:53:54,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 19:53:54,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:53:54,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:53:54,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:53:55,000 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:53:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:53:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1231512254, now seen corresponding path program 1 times [2021-11-25 19:53:55,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:53:55,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099316075] [2021-11-25 19:53:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:53:55,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:53:55,293 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:55,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099316075] [2021-11-25 19:53:55,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099316075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:55,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:55,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:53:55,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59856816] [2021-11-25 19:53:55,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:55,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:53:55,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:55,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:53:55,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:53:55,296 INFO L87 Difference]: Start difference. First operand 243 states and 356 transitions. Second operand has 6 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-25 19:53:55,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:53:55,889 INFO L93 Difference]: Finished difference Result 434 states and 556 transitions. [2021-11-25 19:53:55,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:53:55,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2021-11-25 19:53:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:53:55,893 INFO L225 Difference]: With dead ends: 434 [2021-11-25 19:53:55,893 INFO L226 Difference]: Without dead ends: 434 [2021-11-25 19:53:55,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:53:55,895 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 207 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:53:55,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 533 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:53:55,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-25 19:53:55,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 261. [2021-11-25 19:53:55,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 189 states have (on average 1.9788359788359788) internal successors, (374), 246 states have internal predecessors, (374), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:53:55,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 394 transitions. [2021-11-25 19:53:55,909 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 394 transitions. Word has length 10 [2021-11-25 19:53:55,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:53:55,910 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 394 transitions. [2021-11-25 19:53:55,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-25 19:53:55,910 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 394 transitions. [2021-11-25 19:53:55,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:53:55,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:53:55,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:53:55,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:53:55,912 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:53:55,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:53:55,913 INFO L85 PathProgramCache]: Analyzing trace with hash -477817706, now seen corresponding path program 1 times [2021-11-25 19:53:55,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:53:55,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430449307] [2021-11-25 19:53:55,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:53:55,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:53:55,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:55,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430449307] [2021-11-25 19:53:55,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430449307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:55,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:55,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:53:55,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661633148] [2021-11-25 19:53:55,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:55,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:53:55,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:55,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:53:55,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:53:55,954 INFO L87 Difference]: Start difference. First operand 261 states and 394 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-11-25 19:53:56,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:53:56,113 INFO L93 Difference]: Finished difference Result 337 states and 469 transitions. [2021-11-25 19:53:56,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:53:56,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 11 [2021-11-25 19:53:56,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:53:56,117 INFO L225 Difference]: With dead ends: 337 [2021-11-25 19:53:56,117 INFO L226 Difference]: Without dead ends: 337 [2021-11-25 19:53:56,117 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:53:56,118 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 110 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:53:56,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 183 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:53:56,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-25 19:53:56,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 258. [2021-11-25 19:53:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 189 states have (on average 1.9153439153439153) internal successors, (362), 243 states have internal predecessors, (362), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:53:56,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 382 transitions. [2021-11-25 19:53:56,143 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 382 transitions. Word has length 11 [2021-11-25 19:53:56,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:53:56,143 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 382 transitions. [2021-11-25 19:53:56,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-11-25 19:53:56,144 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 382 transitions. [2021-11-25 19:53:56,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:53:56,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:53:56,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:53:56,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:53:56,146 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:53:56,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:53:56,147 INFO L85 PathProgramCache]: Analyzing trace with hash -477817705, now seen corresponding path program 1 times [2021-11-25 19:53:56,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:53:56,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262353587] [2021-11-25 19:53:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:53:56,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:56,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:53:56,389 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:56,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262353587] [2021-11-25 19:53:56,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262353587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:56,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:56,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:53:56,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948006446] [2021-11-25 19:53:56,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:56,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:53:56,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:56,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:53:56,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:53:56,391 INFO L87 Difference]: Start difference. First operand 258 states and 382 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-11-25 19:53:56,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:53:56,754 INFO L93 Difference]: Finished difference Result 299 states and 386 transitions. [2021-11-25 19:53:56,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:53:56,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 11 [2021-11-25 19:53:56,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:53:56,757 INFO L225 Difference]: With dead ends: 299 [2021-11-25 19:53:56,757 INFO L226 Difference]: Without dead ends: 299 [2021-11-25 19:53:56,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:53:56,759 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 268 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:53:56,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 546 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:53:56,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-25 19:53:56,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 256. [2021-11-25 19:53:56,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 189 states have (on average 1.873015873015873) internal successors, (354), 241 states have internal predecessors, (354), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:53:56,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 374 transitions. [2021-11-25 19:53:56,772 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 374 transitions. Word has length 11 [2021-11-25 19:53:56,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:53:56,772 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 374 transitions. [2021-11-25 19:53:56,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-11-25 19:53:56,773 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 374 transitions. [2021-11-25 19:53:56,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 19:53:56,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:53:56,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:53:56,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:53:56,774 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:53:56,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:53:56,775 INFO L85 PathProgramCache]: Analyzing trace with hash 254841918, now seen corresponding path program 1 times [2021-11-25 19:53:56,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:53:56,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002633698] [2021-11-25 19:53:56,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:53:56,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:53:56,820 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:56,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002633698] [2021-11-25 19:53:56,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002633698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:56,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:56,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:53:56,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753006583] [2021-11-25 19:53:56,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:56,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:53:56,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:56,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:53:56,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:53:56,823 INFO L87 Difference]: Start difference. First operand 256 states and 374 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-25 19:53:57,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:53:57,113 INFO L93 Difference]: Finished difference Result 403 states and 545 transitions. [2021-11-25 19:53:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:53:57,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2021-11-25 19:53:57,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:53:57,117 INFO L225 Difference]: With dead ends: 403 [2021-11-25 19:53:57,117 INFO L226 Difference]: Without dead ends: 403 [2021-11-25 19:53:57,118 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:53:57,119 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 194 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:53:57,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 226 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:53:57,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-11-25 19:53:57,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 262. [2021-11-25 19:53:57,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 195 states have (on average 1.8461538461538463) internal successors, (360), 247 states have internal predecessors, (360), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:53:57,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 380 transitions. [2021-11-25 19:53:57,133 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 380 transitions. Word has length 12 [2021-11-25 19:53:57,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:53:57,134 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 380 transitions. [2021-11-25 19:53:57,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-25 19:53:57,134 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 380 transitions. [2021-11-25 19:53:57,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 19:53:57,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:53:57,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:53:57,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:53:57,136 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:53:57,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:53:57,136 INFO L85 PathProgramCache]: Analyzing trace with hash 254841919, now seen corresponding path program 1 times [2021-11-25 19:53:57,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:53:57,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774197944] [2021-11-25 19:53:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:53:57,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:53:57,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:57,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774197944] [2021-11-25 19:53:57,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774197944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:57,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:57,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:53:57,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389887292] [2021-11-25 19:53:57,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:57,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:53:57,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:57,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:53:57,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:53:57,211 INFO L87 Difference]: Start difference. First operand 262 states and 380 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-25 19:53:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:53:57,461 INFO L93 Difference]: Finished difference Result 313 states and 398 transitions. [2021-11-25 19:53:57,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:53:57,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2021-11-25 19:53:57,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:53:57,465 INFO L225 Difference]: With dead ends: 313 [2021-11-25 19:53:57,465 INFO L226 Difference]: Without dead ends: 313 [2021-11-25 19:53:57,465 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:53:57,466 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 164 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:53:57,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 242 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:53:57,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-25 19:53:57,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 262. [2021-11-25 19:53:57,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 195 states have (on average 1.8) internal successors, (351), 247 states have internal predecessors, (351), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:53:57,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 371 transitions. [2021-11-25 19:53:57,493 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 371 transitions. Word has length 12 [2021-11-25 19:53:57,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:53:57,493 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 371 transitions. [2021-11-25 19:53:57,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-25 19:53:57,494 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 371 transitions. [2021-11-25 19:53:57,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 19:53:57,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:53:57,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:53:57,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:53:57,495 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:53:57,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:53:57,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1927446970, now seen corresponding path program 1 times [2021-11-25 19:53:57,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:53:57,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696874707] [2021-11-25 19:53:57,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:53:57,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:53:57,742 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:57,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696874707] [2021-11-25 19:53:57,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696874707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:57,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:57,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:53:57,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715878830] [2021-11-25 19:53:57,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:57,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:53:57,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:57,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:53:57,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:53:57,745 INFO L87 Difference]: Start difference. First operand 262 states and 371 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-11-25 19:53:58,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:53:58,117 INFO L93 Difference]: Finished difference Result 301 states and 379 transitions. [2021-11-25 19:53:58,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:53:58,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 12 [2021-11-25 19:53:58,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:53:58,122 INFO L225 Difference]: With dead ends: 301 [2021-11-25 19:53:58,122 INFO L226 Difference]: Without dead ends: 301 [2021-11-25 19:53:58,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:53:58,123 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 264 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:53:58,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 533 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:53:58,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-25 19:53:58,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 261. [2021-11-25 19:53:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 195 states have (on average 1.7794871794871794) internal successors, (347), 246 states have internal predecessors, (347), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:53:58,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 367 transitions. [2021-11-25 19:53:58,155 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 367 transitions. Word has length 12 [2021-11-25 19:53:58,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:53:58,156 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 367 transitions. [2021-11-25 19:53:58,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-11-25 19:53:58,156 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 367 transitions. [2021-11-25 19:53:58,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 19:53:58,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:53:58,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:53:58,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:53:58,158 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:53:58,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:53:58,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1154702005, now seen corresponding path program 1 times [2021-11-25 19:53:58,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:53:58,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537745462] [2021-11-25 19:53:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:53:58,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:53:58,473 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:58,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537745462] [2021-11-25 19:53:58,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537745462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:58,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:58,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:53:58,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024701724] [2021-11-25 19:53:58,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:58,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:53:58,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:58,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:53:58,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:53:58,476 INFO L87 Difference]: Start difference. First operand 261 states and 367 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-11-25 19:53:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:53:59,193 INFO L93 Difference]: Finished difference Result 433 states and 551 transitions. [2021-11-25 19:53:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:53:59,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 15 [2021-11-25 19:53:59,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:53:59,197 INFO L225 Difference]: With dead ends: 433 [2021-11-25 19:53:59,197 INFO L226 Difference]: Without dead ends: 433 [2021-11-25 19:53:59,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:53:59,199 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 179 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:53:59,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 838 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:53:59,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-25 19:53:59,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 266. [2021-11-25 19:53:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 200 states have (on average 1.75) internal successors, (350), 250 states have internal predecessors, (350), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:53:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 370 transitions. [2021-11-25 19:53:59,213 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 370 transitions. Word has length 15 [2021-11-25 19:53:59,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:53:59,213 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 370 transitions. [2021-11-25 19:53:59,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-11-25 19:53:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 370 transitions. [2021-11-25 19:53:59,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:53:59,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:53:59,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:53:59,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 19:53:59,216 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:53:59,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:53:59,216 INFO L85 PathProgramCache]: Analyzing trace with hash 683903110, now seen corresponding path program 1 times [2021-11-25 19:53:59,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:53:59,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577875171] [2021-11-25 19:53:59,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:53:59,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:53:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:53:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:53:59,472 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:53:59,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577875171] [2021-11-25 19:53:59,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577875171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:53:59,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:53:59,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:53:59,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062580881] [2021-11-25 19:53:59,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:53:59,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:53:59,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:53:59,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:53:59,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:53:59,475 INFO L87 Difference]: Start difference. First operand 266 states and 370 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-25 19:54:00,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:00,005 INFO L93 Difference]: Finished difference Result 472 states and 623 transitions. [2021-11-25 19:54:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:54:00,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 16 [2021-11-25 19:54:00,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:00,018 INFO L225 Difference]: With dead ends: 472 [2021-11-25 19:54:00,018 INFO L226 Difference]: Without dead ends: 470 [2021-11-25 19:54:00,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:54:00,020 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 269 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:00,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 649 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:54:00,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-11-25 19:54:00,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 260. [2021-11-25 19:54:00,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 194 states have (on average 1.7474226804123711) internal successors, (339), 244 states have internal predecessors, (339), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:54:00,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 359 transitions. [2021-11-25 19:54:00,032 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 359 transitions. Word has length 16 [2021-11-25 19:54:00,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:00,033 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 359 transitions. [2021-11-25 19:54:00,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-25 19:54:00,033 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 359 transitions. [2021-11-25 19:54:00,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 19:54:00,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:00,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:00,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 19:54:00,035 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:00,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:00,036 INFO L85 PathProgramCache]: Analyzing trace with hash -273464699, now seen corresponding path program 1 times [2021-11-25 19:54:00,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:00,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373627522] [2021-11-25 19:54:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:00,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:00,079 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:00,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373627522] [2021-11-25 19:54:00,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373627522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:00,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:54:00,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:54:00,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700298892] [2021-11-25 19:54:00,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:00,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:54:00,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:00,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:54:00,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:54:00,081 INFO L87 Difference]: Start difference. First operand 260 states and 359 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-25 19:54:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:00,295 INFO L93 Difference]: Finished difference Result 422 states and 552 transitions. [2021-11-25 19:54:00,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:54:00,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 17 [2021-11-25 19:54:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:00,299 INFO L225 Difference]: With dead ends: 422 [2021-11-25 19:54:00,299 INFO L226 Difference]: Without dead ends: 422 [2021-11-25 19:54:00,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:54:00,300 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 333 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:00,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 254 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:54:00,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-11-25 19:54:00,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 257. [2021-11-25 19:54:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 197 states have (on average 1.6649746192893402) internal successors, (328), 241 states have internal predecessors, (328), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:54:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 348 transitions. [2021-11-25 19:54:00,319 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 348 transitions. Word has length 17 [2021-11-25 19:54:00,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:00,320 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 348 transitions. [2021-11-25 19:54:00,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-25 19:54:00,320 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 348 transitions. [2021-11-25 19:54:00,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 19:54:00,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:00,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:00,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 19:54:00,322 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:00,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:00,323 INFO L85 PathProgramCache]: Analyzing trace with hash -273464698, now seen corresponding path program 1 times [2021-11-25 19:54:00,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:00,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696863653] [2021-11-25 19:54:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:00,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:00,430 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:00,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696863653] [2021-11-25 19:54:00,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696863653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:00,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:54:00,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:54:00,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252237476] [2021-11-25 19:54:00,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:00,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:54:00,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:00,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:54:00,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:54:00,436 INFO L87 Difference]: Start difference. First operand 257 states and 348 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-25 19:54:00,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:00,657 INFO L93 Difference]: Finished difference Result 299 states and 368 transitions. [2021-11-25 19:54:00,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:54:00,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 17 [2021-11-25 19:54:00,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:00,663 INFO L225 Difference]: With dead ends: 299 [2021-11-25 19:54:00,663 INFO L226 Difference]: Without dead ends: 299 [2021-11-25 19:54:00,664 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:54:00,665 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 141 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:00,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 237 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:54:00,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-25 19:54:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 257. [2021-11-25 19:54:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 197 states have (on average 1.6294416243654823) internal successors, (321), 241 states have internal predecessors, (321), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:54:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 341 transitions. [2021-11-25 19:54:00,688 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 341 transitions. Word has length 17 [2021-11-25 19:54:00,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:00,689 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 341 transitions. [2021-11-25 19:54:00,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-25 19:54:00,689 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 341 transitions. [2021-11-25 19:54:00,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 19:54:00,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:00,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:00,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 19:54:00,691 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:00,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:00,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1566726611, now seen corresponding path program 1 times [2021-11-25 19:54:00,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:00,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33304917] [2021-11-25 19:54:00,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:00,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:00,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:00,840 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:00,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33304917] [2021-11-25 19:54:00,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33304917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:00,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:54:00,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:54:00,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705226268] [2021-11-25 19:54:00,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:00,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:54:00,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:00,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:54:00,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:54:00,843 INFO L87 Difference]: Start difference. First operand 257 states and 341 transitions. Second operand has 7 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-25 19:54:01,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:01,122 INFO L93 Difference]: Finished difference Result 285 states and 349 transitions. [2021-11-25 19:54:01,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:54:01,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 17 [2021-11-25 19:54:01,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:01,126 INFO L225 Difference]: With dead ends: 285 [2021-11-25 19:54:01,126 INFO L226 Difference]: Without dead ends: 285 [2021-11-25 19:54:01,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:54:01,127 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 362 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:01,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 442 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:54:01,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-25 19:54:01,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 255. [2021-11-25 19:54:01,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 197 states have (on average 1.6091370558375635) internal successors, (317), 239 states have internal predecessors, (317), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:54:01,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 337 transitions. [2021-11-25 19:54:01,139 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 337 transitions. Word has length 17 [2021-11-25 19:54:01,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:01,139 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 337 transitions. [2021-11-25 19:54:01,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-25 19:54:01,140 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 337 transitions. [2021-11-25 19:54:01,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 19:54:01,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:01,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:01,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 19:54:01,142 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:01,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:01,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1909248655, now seen corresponding path program 1 times [2021-11-25 19:54:01,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:01,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734531797] [2021-11-25 19:54:01,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:01,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:01,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:01,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734531797] [2021-11-25 19:54:01,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734531797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:01,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:54:01,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:54:01,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566035771] [2021-11-25 19:54:01,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:01,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:54:01,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:01,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:54:01,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:54:01,293 INFO L87 Difference]: Start difference. First operand 255 states and 337 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-25 19:54:01,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:01,552 INFO L93 Difference]: Finished difference Result 284 states and 345 transitions. [2021-11-25 19:54:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:54:01,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 19 [2021-11-25 19:54:01,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:01,555 INFO L225 Difference]: With dead ends: 284 [2021-11-25 19:54:01,555 INFO L226 Difference]: Without dead ends: 284 [2021-11-25 19:54:01,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:54:01,556 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 336 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:01,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 193 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:54:01,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-25 19:54:01,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 253. [2021-11-25 19:54:01,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 197 states have (on average 1.5888324873096447) internal successors, (313), 237 states have internal predecessors, (313), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:54:01,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 333 transitions. [2021-11-25 19:54:01,567 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 333 transitions. Word has length 19 [2021-11-25 19:54:01,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:01,568 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 333 transitions. [2021-11-25 19:54:01,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-25 19:54:01,568 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 333 transitions. [2021-11-25 19:54:01,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 19:54:01,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:01,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:01,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 19:54:01,570 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:01,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:01,571 INFO L85 PathProgramCache]: Analyzing trace with hash 766235340, now seen corresponding path program 1 times [2021-11-25 19:54:01,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:01,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90566296] [2021-11-25 19:54:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:01,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:01,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:01,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90566296] [2021-11-25 19:54:01,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90566296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:01,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:54:01,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:54:01,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015152485] [2021-11-25 19:54:01,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:01,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:54:01,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:01,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:54:01,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:54:01,738 INFO L87 Difference]: Start difference. First operand 253 states and 333 transitions. Second operand has 7 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-25 19:54:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:02,234 INFO L93 Difference]: Finished difference Result 371 states and 480 transitions. [2021-11-25 19:54:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:54:02,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 20 [2021-11-25 19:54:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:02,237 INFO L225 Difference]: With dead ends: 371 [2021-11-25 19:54:02,237 INFO L226 Difference]: Without dead ends: 371 [2021-11-25 19:54:02,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:54:02,239 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 328 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:02,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 475 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:54:02,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-25 19:54:02,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 251. [2021-11-25 19:54:02,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 197 states have (on average 1.5685279187817258) internal successors, (309), 235 states have internal predecessors, (309), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:54:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 329 transitions. [2021-11-25 19:54:02,252 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 329 transitions. Word has length 20 [2021-11-25 19:54:02,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:02,253 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 329 transitions. [2021-11-25 19:54:02,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-25 19:54:02,253 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 329 transitions. [2021-11-25 19:54:02,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 19:54:02,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:02,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:02,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 19:54:02,255 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:02,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:02,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2016505869, now seen corresponding path program 1 times [2021-11-25 19:54:02,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:02,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840696437] [2021-11-25 19:54:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:02,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:02,473 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:02,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840696437] [2021-11-25 19:54:02,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840696437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:02,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:54:02,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:54:02,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654097437] [2021-11-25 19:54:02,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:02,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:54:02,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:02,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:54:02,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:54:02,476 INFO L87 Difference]: Start difference. First operand 251 states and 329 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-25 19:54:02,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:02,815 INFO L93 Difference]: Finished difference Result 273 states and 345 transitions. [2021-11-25 19:54:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:54:02,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 21 [2021-11-25 19:54:02,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:02,818 INFO L225 Difference]: With dead ends: 273 [2021-11-25 19:54:02,818 INFO L226 Difference]: Without dead ends: 273 [2021-11-25 19:54:02,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:54:02,819 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 74 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:02,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 428 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:54:02,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-25 19:54:02,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 251. [2021-11-25 19:54:02,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 197 states have (on average 1.5634517766497462) internal successors, (308), 235 states have internal predecessors, (308), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:54:02,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 328 transitions. [2021-11-25 19:54:02,832 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 328 transitions. Word has length 21 [2021-11-25 19:54:02,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:02,833 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 328 transitions. [2021-11-25 19:54:02,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-25 19:54:02,833 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 328 transitions. [2021-11-25 19:54:02,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 19:54:02,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:02,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:02,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 19:54:02,839 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:02,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:02,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2016644788, now seen corresponding path program 1 times [2021-11-25 19:54:02,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:02,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751679138] [2021-11-25 19:54:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:02,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:02,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:02,960 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:02,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751679138] [2021-11-25 19:54:02,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751679138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:02,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:54:02,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:54:02,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435609468] [2021-11-25 19:54:02,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:02,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:54:02,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:02,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:54:02,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:54:02,963 INFO L87 Difference]: Start difference. First operand 251 states and 328 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-11-25 19:54:03,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:03,168 INFO L93 Difference]: Finished difference Result 272 states and 344 transitions. [2021-11-25 19:54:03,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:54:03,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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 21 [2021-11-25 19:54:03,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:03,173 INFO L225 Difference]: With dead ends: 272 [2021-11-25 19:54:03,173 INFO L226 Difference]: Without dead ends: 272 [2021-11-25 19:54:03,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:54:03,174 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 75 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:03,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 347 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:54:03,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-25 19:54:03,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 251. [2021-11-25 19:54:03,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 197 states have (on average 1.5583756345177664) internal successors, (307), 235 states have internal predecessors, (307), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 19:54:03,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 327 transitions. [2021-11-25 19:54:03,187 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 327 transitions. Word has length 21 [2021-11-25 19:54:03,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:03,188 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 327 transitions. [2021-11-25 19:54:03,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-11-25 19:54:03,188 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 327 transitions. [2021-11-25 19:54:03,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 19:54:03,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:03,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:03,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 19:54:03,191 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:03,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:03,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1908521203, now seen corresponding path program 1 times [2021-11-25 19:54:03,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:03,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532897822] [2021-11-25 19:54:03,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:03,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:03,331 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:03,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532897822] [2021-11-25 19:54:03,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532897822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:03,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:54:03,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:54:03,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175876239] [2021-11-25 19:54:03,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:03,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:54:03,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:03,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:54:03,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:54:03,334 INFO L87 Difference]: Start difference. First operand 251 states and 327 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-11-25 19:54:03,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:03,610 INFO L93 Difference]: Finished difference Result 329 states and 416 transitions. [2021-11-25 19:54:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:54:03,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 22 [2021-11-25 19:54:03,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:03,616 INFO L225 Difference]: With dead ends: 329 [2021-11-25 19:54:03,617 INFO L226 Difference]: Without dead ends: 329 [2021-11-25 19:54:03,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:54:03,618 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 114 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:03,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 327 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:54:03,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-25 19:54:03,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 284. [2021-11-25 19:54:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 227 states have (on average 1.5374449339207048) internal successors, (349), 266 states have internal predecessors, (349), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-25 19:54:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 373 transitions. [2021-11-25 19:54:03,631 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 373 transitions. Word has length 22 [2021-11-25 19:54:03,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:03,631 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 373 transitions. [2021-11-25 19:54:03,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-11-25 19:54:03,632 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 373 transitions. [2021-11-25 19:54:03,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 19:54:03,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:03,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:03,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 19:54:03,633 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:03,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:03,634 INFO L85 PathProgramCache]: Analyzing trace with hash 137846869, now seen corresponding path program 1 times [2021-11-25 19:54:03,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:03,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697018519] [2021-11-25 19:54:03,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:03,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:03,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:03,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:03,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697018519] [2021-11-25 19:54:03,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697018519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:03,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:54:03,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:54:03,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084227663] [2021-11-25 19:54:03,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:03,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:54:03,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:03,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:54:03,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:54:03,766 INFO L87 Difference]: Start difference. First operand 284 states and 373 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-11-25 19:54:04,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:04,391 INFO L93 Difference]: Finished difference Result 523 states and 670 transitions. [2021-11-25 19:54:04,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:54:04,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 24 [2021-11-25 19:54:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:04,395 INFO L225 Difference]: With dead ends: 523 [2021-11-25 19:54:04,395 INFO L226 Difference]: Without dead ends: 523 [2021-11-25 19:54:04,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:54:04,396 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 254 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:04,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 472 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:54:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-11-25 19:54:04,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 313. [2021-11-25 19:54:04,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 253 states have (on average 1.5138339920948616) internal successors, (383), 293 states have internal predecessors, (383), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-25 19:54:04,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 411 transitions. [2021-11-25 19:54:04,411 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 411 transitions. Word has length 24 [2021-11-25 19:54:04,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:04,411 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 411 transitions. [2021-11-25 19:54:04,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-11-25 19:54:04,412 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 411 transitions. [2021-11-25 19:54:04,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 19:54:04,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:04,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:04,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 19:54:04,413 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:04,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:04,414 INFO L85 PathProgramCache]: Analyzing trace with hash -21714160, now seen corresponding path program 1 times [2021-11-25 19:54:04,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:04,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100788702] [2021-11-25 19:54:04,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:04,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:04,504 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:04,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100788702] [2021-11-25 19:54:04,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100788702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:04,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:54:04,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:54:04,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380237285] [2021-11-25 19:54:04,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:04,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:54:04,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:04,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:54:04,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:54:04,507 INFO L87 Difference]: Start difference. First operand 313 states and 411 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-11-25 19:54:04,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:04,803 INFO L93 Difference]: Finished difference Result 359 states and 441 transitions. [2021-11-25 19:54:04,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:54:04,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 25 [2021-11-25 19:54:04,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:04,806 INFO L225 Difference]: With dead ends: 359 [2021-11-25 19:54:04,807 INFO L226 Difference]: Without dead ends: 359 [2021-11-25 19:54:04,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:54:04,808 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 198 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:04,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 317 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:54:04,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-11-25 19:54:04,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 313. [2021-11-25 19:54:04,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 253 states have (on average 1.4980237154150198) internal successors, (379), 293 states have internal predecessors, (379), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-25 19:54:04,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 407 transitions. [2021-11-25 19:54:04,822 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 407 transitions. Word has length 25 [2021-11-25 19:54:04,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:04,822 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 407 transitions. [2021-11-25 19:54:04,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-11-25 19:54:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 407 transitions. [2021-11-25 19:54:04,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 19:54:04,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:04,824 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:04,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 19:54:04,824 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:04,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:04,825 INFO L85 PathProgramCache]: Analyzing trace with hash -390504100, now seen corresponding path program 1 times [2021-11-25 19:54:04,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:04,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217691993] [2021-11-25 19:54:04,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:04,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:05,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:54:05,018 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:05,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217691993] [2021-11-25 19:54:05,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217691993] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:54:05,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181832460] [2021-11-25 19:54:05,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:05,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:05,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:54:05,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:54:05,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:54:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:05,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-25 19:54:05,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:54:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:05,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:54:06,157 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:54:06,158 INFO L388 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 25 treesize of output 29 [2021-11-25 19:54:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:54:06,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181832460] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:54:06,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1108838792] [2021-11-25 19:54:06,470 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2021-11-25 19:54:06,471 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:54:06,477 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:54:06,484 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:54:06,485 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:54:06,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:54:06,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:06,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:06,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:06,924 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-11-25 19:54:06,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2021-11-25 19:54:07,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:07,259 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:54:07,260 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:54:07,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:07,310 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:54:07,310 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:54:07,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:07,403 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:54:07,403 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:54:07,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:07,656 INFO L354 Elim1Store]: treesize reduction 230, result has 14.5 percent of original size [2021-11-25 19:54:07,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2021-11-25 19:54:07,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:07,786 INFO L354 Elim1Store]: treesize reduction 230, result has 14.5 percent of original size [2021-11-25 19:54:07,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2021-11-25 19:54:07,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:07,860 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:54:07,861 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:54:08,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:08,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:08,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:08,128 INFO L354 Elim1Store]: treesize reduction 272, result has 11.1 percent of original size [2021-11-25 19:54:08,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 286 treesize of output 272 [2021-11-25 19:54:08,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:08,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:08,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:08,266 INFO L354 Elim1Store]: treesize reduction 272, result has 11.1 percent of original size [2021-11-25 19:54:08,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 286 treesize of output 272 [2021-11-25 19:54:08,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:08,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:08,296 INFO L388 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 0 case distinctions, treesize of input 247 treesize of output 241 [2021-11-25 19:54:08,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:08,690 INFO L354 Elim1Store]: treesize reduction 274, result has 17.2 percent of original size [2021-11-25 19:54:08,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 282 treesize of output 290 [2021-11-25 19:54:08,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:08,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:08,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:08,760 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-25 19:54:08,760 INFO L388 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 3 case distinctions, treesize of input 246 treesize of output 224 [2021-11-25 19:54:08,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:08,878 INFO L354 Elim1Store]: treesize reduction 292, result has 11.8 percent of original size [2021-11-25 19:54:08,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 262 treesize of output 252 [2021-11-25 19:54:09,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:10,032 INFO L354 Elim1Store]: treesize reduction 274, result has 17.2 percent of original size [2021-11-25 19:54:10,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 282 treesize of output 290 [2021-11-25 19:54:10,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:10,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:10,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:10,097 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-25 19:54:10,098 INFO L388 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 3 case distinctions, treesize of input 246 treesize of output 224 [2021-11-25 19:54:10,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:10,225 INFO L354 Elim1Store]: treesize reduction 292, result has 11.8 percent of original size [2021-11-25 19:54:10,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 262 treesize of output 252 [2021-11-25 19:54:10,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:54:10,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:10,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:10,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:10,894 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-11-25 19:54:10,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2021-11-25 19:54:11,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:11,105 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:54:11,105 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:54:11,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:11,161 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:54:11,162 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:54:11,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:11,241 INFO L354 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2021-11-25 19:54:11,242 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 247 [2021-11-25 19:54:11,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:11,480 INFO L354 Elim1Store]: treesize reduction 230, result has 14.5 percent of original size [2021-11-25 19:54:11,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2021-11-25 19:54:11,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:11,531 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:54:11,531 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:54:11,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:11,614 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:54:11,614 INFO L388 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 5 case distinctions, treesize of input 269 treesize of output 258 [2021-11-25 19:54:11,709 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 54 for LOIs [2021-11-25 19:54:11,734 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:54:20,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1108838792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:20,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:54:20,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [7, 7, 8] total 37 [2021-11-25 19:54:20,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162447490] [2021-11-25 19:54:20,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:20,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 19:54:20,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:20,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 19:54:20,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 19:54:20,196 INFO L87 Difference]: Start difference. First operand 313 states and 407 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-11-25 19:54:21,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:21,863 INFO L93 Difference]: Finished difference Result 326 states and 421 transitions. [2021-11-25 19:54:21,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 19:54:21,863 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 15 states have internal predecessors, (20), 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 28 [2021-11-25 19:54:21,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:21,865 INFO L225 Difference]: With dead ends: 326 [2021-11-25 19:54:21,866 INFO L226 Difference]: Without dead ends: 326 [2021-11-25 19:54:21,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 19:54:21,868 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 26 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:21,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 314 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 19:54:21,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-25 19:54:21,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 317. [2021-11-25 19:54:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 257 states have (on average 1.4941634241245136) internal successors, (384), 297 states have internal predecessors, (384), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-25 19:54:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 412 transitions. [2021-11-25 19:54:21,881 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 412 transitions. Word has length 28 [2021-11-25 19:54:21,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:21,881 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 412 transitions. [2021-11-25 19:54:21,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-11-25 19:54:21,882 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 412 transitions. [2021-11-25 19:54:21,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-25 19:54:21,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:21,883 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:21,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 19:54:22,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-25 19:54:22,112 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:22,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:22,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1150142918, now seen corresponding path program 1 times [2021-11-25 19:54:22,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:22,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429790682] [2021-11-25 19:54:22,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:22,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:54:22,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:22,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429790682] [2021-11-25 19:54:22,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429790682] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:54:22,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372605352] [2021-11-25 19:54:22,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:22,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:22,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:54:22,308 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:54:22,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:54:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:22,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-25 19:54:22,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:54:22,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:22,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:54:23,110 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:54:23,111 INFO L388 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 25 treesize of output 29 [2021-11-25 19:54:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:54:23,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372605352] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:54:23,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1623867762] [2021-11-25 19:54:23,373 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-25 19:54:23,373 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:54:23,374 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:54:23,374 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:54:23,374 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:54:23,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:54:23,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:23,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:23,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:23,641 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-11-25 19:54:23,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2021-11-25 19:54:23,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:23,832 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:54:23,832 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:54:23,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:23,908 INFO L354 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2021-11-25 19:54:23,909 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 247 [2021-11-25 19:54:23,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:23,955 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:54:23,956 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:54:24,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:24,161 INFO L354 Elim1Store]: treesize reduction 238, result has 11.5 percent of original size [2021-11-25 19:54:24,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 261 [2021-11-25 19:54:24,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:24,274 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:54:24,274 INFO L388 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 5 case distinctions, treesize of input 259 treesize of output 250 [2021-11-25 19:54:24,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:24,317 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:54:24,318 INFO L388 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 1 case distinctions, treesize of input 241 treesize of output 216 [2021-11-25 19:54:24,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:24,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:24,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:24,516 INFO L354 Elim1Store]: treesize reduction 160, result has 12.6 percent of original size [2021-11-25 19:54:24,516 INFO L388 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 7 case distinctions, treesize of input 266 treesize of output 253 [2021-11-25 19:54:24,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:24,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:24,549 INFO L388 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 0 case distinctions, treesize of input 231 treesize of output 225 [2021-11-25 19:54:24,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:24,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:24,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:24,632 INFO L354 Elim1Store]: treesize reduction 160, result has 12.6 percent of original size [2021-11-25 19:54:24,632 INFO L388 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 7 case distinctions, treesize of input 266 treesize of output 253 [2021-11-25 19:54:24,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:24,957 INFO L354 Elim1Store]: treesize reduction 226, result has 14.7 percent of original size [2021-11-25 19:54:24,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 270 treesize of output 264 [2021-11-25 19:54:24,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:24,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:24,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:25,019 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-25 19:54:25,020 INFO L388 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 3 case distinctions, treesize of input 258 treesize of output 236 [2021-11-25 19:54:25,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:25,151 INFO L354 Elim1Store]: treesize reduction 208, result has 21.5 percent of original size [2021-11-25 19:54:25,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 270 treesize of output 290 [2021-11-25 19:54:25,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:54:25,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:25,577 INFO L354 Elim1Store]: treesize reduction 258, result has 9.2 percent of original size [2021-11-25 19:54:25,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 320 treesize of output 298 [2021-11-25 19:54:25,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:54:25,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:25,686 INFO L354 Elim1Store]: treesize reduction 261, result has 8.1 percent of original size [2021-11-25 19:54:25,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 300 treesize of output 267 [2021-11-25 19:54:25,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:25,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:25,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:25,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:25,723 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:54:25,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 252 treesize of output 230 [2021-11-25 19:54:26,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:26,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:54:26,286 INFO L354 Elim1Store]: treesize reduction 125, result has 8.1 percent of original size [2021-11-25 19:54:26,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 221 treesize of output 188 [2021-11-25 19:54:26,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:26,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:54:26,750 INFO L354 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2021-11-25 19:54:26,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 213 treesize of output 186 [2021-11-25 19:54:27,561 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:54:27,562 INFO L388 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 17 treesize of output 23 [2021-11-25 19:54:27,647 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:54:27,647 INFO L388 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 [2021-11-25 19:54:27,686 INFO L388 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 27 treesize of output 26 [2021-11-25 19:54:27,701 INFO L388 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 27 treesize of output 26 [2021-11-25 19:54:27,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:54:27,788 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:54:27,789 INFO L388 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 38 treesize of output 48 [2021-11-25 19:54:27,830 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:54:27,831 INFO L388 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 38 treesize of output 48 [2021-11-25 19:54:27,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:54:27,952 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:54:27,952 INFO L388 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 61 treesize of output 75 [2021-11-25 19:54:27,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:54:28,056 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:54:28,056 INFO L388 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 61 treesize of output 75 [2021-11-25 19:54:28,514 INFO L388 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 11 [2021-11-25 19:54:28,527 INFO L388 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 23 treesize of output 1 [2021-11-25 19:54:28,541 INFO L388 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 11 [2021-11-25 19:54:28,642 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:54:28,643 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:54:28,665 INFO L388 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 23 treesize of output 1 [2021-11-25 19:54:28,696 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:54:28,696 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:54:29,929 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:54:29,930 INFO L388 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 [2021-11-25 19:54:29,947 INFO L388 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 17 treesize of output 19 [2021-11-25 19:54:29,989 INFO L388 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 27 treesize of output 26 [2021-11-25 19:54:30,014 INFO L388 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 27 treesize of output 26 [2021-11-25 19:54:30,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:54:30,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:54:30,117 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:54:30,118 INFO L388 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 38 treesize of output 48 [2021-11-25 19:54:30,160 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:54:30,160 INFO L388 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 38 treesize of output 48 [2021-11-25 19:54:30,279 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:54:30,279 INFO L388 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 61 treesize of output 75 [2021-11-25 19:54:30,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:54:30,392 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:54:30,393 INFO L388 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 61 treesize of output 75 [2021-11-25 19:54:30,681 INFO L388 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 23 treesize of output 1 [2021-11-25 19:54:30,697 INFO L388 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 11 [2021-11-25 19:54:30,711 INFO L388 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 11 [2021-11-25 19:54:30,808 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:54:30,808 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:54:30,840 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:54:30,841 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:54:30,856 INFO L388 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 23 treesize of output 1 [2021-11-25 19:54:31,180 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:54:31,180 INFO L388 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 17 treesize of output 23 [2021-11-25 19:54:31,242 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:54:31,243 INFO L388 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 [2021-11-25 19:54:31,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:54:31,313 INFO L388 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 27 treesize of output 26 [2021-11-25 19:54:31,330 INFO L388 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 27 treesize of output 26 [2021-11-25 19:54:31,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:31,382 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:54:31,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:31,399 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:54:31,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:54:31,449 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2021-11-25 19:54:31,466 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:54:35,521 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15258#(and (<= |~#list~0.base| 3) (= |~#list~0.offset| |ULTIMATE.start_append_one_#in~list#1.offset|) (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_append_one_~list#1.offset| |ULTIMATE.start_append_one_#in~list#1.offset|) (= |ULTIMATE.start_append_one_#in~to#1| |ULTIMATE.start_main_#t~ret23#1|) (= |ULTIMATE.start_append_one_#in~list#1.base| |ULTIMATE.start_append_one_~list#1.base|) (= |ULTIMATE.start_append_one_#in~to#1| |ULTIMATE.start_append_one_~to#1|) (<= |#NULL.base| 0) (< (select |#length| |ULTIMATE.start_append_one_~list#1.base|) (+ (* 4 |ULTIMATE.start_append_one_~to#1|) |ULTIMATE.start_append_one_~list#1.offset| 4)) (or (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_#t~ret23#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_#t~ret23#1|)) (= |ULTIMATE.start_append_one_#in~list#1.base| |~#list~0.base|) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= |~#list~0.offset| 0))' at error location [2021-11-25 19:54:35,521 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:54:35,521 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:54:35,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 18 [2021-11-25 19:54:35,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952672219] [2021-11-25 19:54:35,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:54:35,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-25 19:54:35,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:35,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-25 19:54:35,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1156, Unknown=0, NotChecked=0, Total=1482 [2021-11-25 19:54:35,524 INFO L87 Difference]: Start difference. First operand 317 states and 412 transitions. Second operand has 19 states, 15 states have (on average 4.533333333333333) internal successors, (68), 17 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-25 19:54:35,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:35,961 INFO L93 Difference]: Finished difference Result 342 states and 420 transitions. [2021-11-25 19:54:35,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:54:35,962 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 4.533333333333333) internal successors, (68), 17 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2021-11-25 19:54:35,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:35,964 INFO L225 Difference]: With dead ends: 342 [2021-11-25 19:54:35,964 INFO L226 Difference]: Without dead ends: 342 [2021-11-25 19:54:35,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=357, Invalid=1283, Unknown=0, NotChecked=0, Total=1640 [2021-11-25 19:54:35,966 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 888 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:35,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 418 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:54:35,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-25 19:54:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 306. [2021-11-25 19:54:35,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 248 states have (on average 1.4758064516129032) internal successors, (366), 287 states have internal predecessors, (366), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-25 19:54:35,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 394 transitions. [2021-11-25 19:54:35,997 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 394 transitions. Word has length 29 [2021-11-25 19:54:35,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:35,998 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 394 transitions. [2021-11-25 19:54:35,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 4.533333333333333) internal successors, (68), 17 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-25 19:54:36,000 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 394 transitions. [2021-11-25 19:54:36,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 19:54:36,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:36,001 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 19:54:36,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:54:36,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-25 19:54:36,215 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:36,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:36,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1121558755, now seen corresponding path program 1 times [2021-11-25 19:54:36,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:36,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877918771] [2021-11-25 19:54:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:36,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:36,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:36,368 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:36,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877918771] [2021-11-25 19:54:36,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877918771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:36,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:54:36,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:54:36,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604579851] [2021-11-25 19:54:36,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:36,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:54:36,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:36,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:54:36,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:54:36,371 INFO L87 Difference]: Start difference. First operand 306 states and 394 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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) [2021-11-25 19:54:36,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:36,613 INFO L93 Difference]: Finished difference Result 333 states and 405 transitions. [2021-11-25 19:54:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:54:36,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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 30 [2021-11-25 19:54:36,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:36,616 INFO L225 Difference]: With dead ends: 333 [2021-11-25 19:54:36,616 INFO L226 Difference]: Without dead ends: 333 [2021-11-25 19:54:36,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:54:36,617 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 448 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:36,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 230 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:54:36,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-25 19:54:36,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 301. [2021-11-25 19:54:36,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 244 states have (on average 1.471311475409836) internal successors, (359), 282 states have internal predecessors, (359), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-25 19:54:36,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 387 transitions. [2021-11-25 19:54:36,633 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 387 transitions. Word has length 30 [2021-11-25 19:54:36,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:36,634 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 387 transitions. [2021-11-25 19:54:36,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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) [2021-11-25 19:54:36,634 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 387 transitions. [2021-11-25 19:54:36,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 19:54:36,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:36,635 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:36,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 19:54:36,635 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:36,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:36,636 INFO L85 PathProgramCache]: Analyzing trace with hash 701790395, now seen corresponding path program 1 times [2021-11-25 19:54:36,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:36,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515365973] [2021-11-25 19:54:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:36,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:54:36,765 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:36,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515365973] [2021-11-25 19:54:36,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515365973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:36,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:54:36,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:54:36,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169165818] [2021-11-25 19:54:36,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:36,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:54:36,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:36,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:54:36,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:54:36,768 INFO L87 Difference]: Start difference. First operand 301 states and 387 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:54:37,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:37,046 INFO L93 Difference]: Finished difference Result 382 states and 466 transitions. [2021-11-25 19:54:37,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:54:37,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2021-11-25 19:54:37,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:37,049 INFO L225 Difference]: With dead ends: 382 [2021-11-25 19:54:37,049 INFO L226 Difference]: Without dead ends: 382 [2021-11-25 19:54:37,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:54:37,050 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 287 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:37,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 212 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:54:37,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-25 19:54:37,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 299. [2021-11-25 19:54:37,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 244 states have (on average 1.4549180327868851) internal successors, (355), 280 states have internal predecessors, (355), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-25 19:54:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 383 transitions. [2021-11-25 19:54:37,061 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 383 transitions. Word has length 31 [2021-11-25 19:54:37,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:37,062 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 383 transitions. [2021-11-25 19:54:37,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:54:37,062 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 383 transitions. [2021-11-25 19:54:37,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:54:37,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:37,063 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:37,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-25 19:54:37,063 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:37,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:37,064 INFO L85 PathProgramCache]: Analyzing trace with hash -218786070, now seen corresponding path program 1 times [2021-11-25 19:54:37,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:37,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795346528] [2021-11-25 19:54:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:37,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:37,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:37,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795346528] [2021-11-25 19:54:37,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795346528] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:54:37,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473046797] [2021-11-25 19:54:37,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:37,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:37,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:54:37,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:54:37,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:54:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:37,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-25 19:54:37,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:54:37,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:54:37,882 INFO L388 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 16 treesize of output 12 [2021-11-25 19:54:38,126 INFO L388 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 11 [2021-11-25 19:54:38,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,317 INFO L388 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 0 case distinctions, treesize of input 47 treesize of output 30 [2021-11-25 19:54:38,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,567 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-25 19:54:38,568 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 14 [2021-11-25 19:54:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:38,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:54:38,881 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:54:38,882 INFO L388 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 271 treesize of output 273 [2021-11-25 19:54:38,897 INFO L388 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 40 treesize of output 34 [2021-11-25 19:54:38,940 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-25 19:54:38,940 INFO L388 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 303 treesize of output 309 [2021-11-25 19:54:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:39,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473046797] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:54:39,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:54:39,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [12, 14] total 36 [2021-11-25 19:54:39,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719925150] [2021-11-25 19:54:39,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:39,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 19:54:39,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:39,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 19:54:39,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1120, Unknown=0, NotChecked=0, Total=1260 [2021-11-25 19:54:39,879 INFO L87 Difference]: Start difference. First operand 299 states and 383 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2021-11-25 19:54:42,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:42,628 INFO L93 Difference]: Finished difference Result 509 states and 609 transitions. [2021-11-25 19:54:42,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:54:42,628 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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 32 [2021-11-25 19:54:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:42,632 INFO L225 Difference]: With dead ends: 509 [2021-11-25 19:54:42,632 INFO L226 Difference]: Without dead ends: 509 [2021-11-25 19:54:42,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=332, Invalid=2424, Unknown=0, NotChecked=0, Total=2756 [2021-11-25 19:54:42,634 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 940 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:42,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [940 Valid, 1026 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 19:54:42,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-11-25 19:54:42,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 360. [2021-11-25 19:54:42,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 299 states have (on average 1.471571906354515) internal successors, (440), 337 states have internal predecessors, (440), 18 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-25 19:54:42,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 476 transitions. [2021-11-25 19:54:42,652 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 476 transitions. Word has length 32 [2021-11-25 19:54:42,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:42,652 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 476 transitions. [2021-11-25 19:54:42,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2021-11-25 19:54:42,653 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 476 transitions. [2021-11-25 19:54:42,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:54:42,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:42,654 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:42,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:54:42,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-25 19:54:42,867 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:42,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:42,868 INFO L85 PathProgramCache]: Analyzing trace with hash -218787417, now seen corresponding path program 1 times [2021-11-25 19:54:42,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:42,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913136109] [2021-11-25 19:54:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:42,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:44,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:44,023 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:44,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913136109] [2021-11-25 19:54:44,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913136109] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:54:44,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321500292] [2021-11-25 19:54:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:44,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:44,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:54:44,026 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:54:44,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:54:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:44,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-25 19:54:44,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:54:44,362 INFO L388 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 [2021-11-25 19:54:44,650 INFO L388 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 11 [2021-11-25 19:54:44,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:44,845 INFO L388 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 0 case distinctions, treesize of input 60 treesize of output 35 [2021-11-25 19:54:45,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:45,140 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-25 19:54:45,140 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 19 [2021-11-25 19:54:45,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:45,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:54:45,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321500292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:45,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:54:45,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [16] total 29 [2021-11-25 19:54:45,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128690399] [2021-11-25 19:54:45,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:45,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 19:54:45,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:45,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 19:54:45,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2021-11-25 19:54:45,188 INFO L87 Difference]: Start difference. First operand 360 states and 476 transitions. Second operand has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2021-11-25 19:54:46,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:46,703 INFO L93 Difference]: Finished difference Result 575 states and 714 transitions. [2021-11-25 19:54:46,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 19:54:46,703 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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 32 [2021-11-25 19:54:46,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:46,708 INFO L225 Difference]: With dead ends: 575 [2021-11-25 19:54:46,708 INFO L226 Difference]: Without dead ends: 575 [2021-11-25 19:54:46,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=282, Invalid=1788, Unknown=0, NotChecked=0, Total=2070 [2021-11-25 19:54:46,709 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 744 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:46,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 920 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 19:54:46,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-11-25 19:54:46,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 422. [2021-11-25 19:54:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 352 states have (on average 1.4630681818181819) internal successors, (515), 393 states have internal predecessors, (515), 24 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 16 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-25 19:54:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 563 transitions. [2021-11-25 19:54:46,725 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 563 transitions. Word has length 32 [2021-11-25 19:54:46,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:46,725 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 563 transitions. [2021-11-25 19:54:46,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2021-11-25 19:54:46,726 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 563 transitions. [2021-11-25 19:54:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:54:46,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:46,727 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:46,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:54:46,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:46,943 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:54:46,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:46,944 INFO L85 PathProgramCache]: Analyzing trace with hash -218787416, now seen corresponding path program 1 times [2021-11-25 19:54:46,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:46,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880472147] [2021-11-25 19:54:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:46,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:48,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:48,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880472147] [2021-11-25 19:54:48,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880472147] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:54:48,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333964570] [2021-11-25 19:54:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:48,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:48,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:54:48,522 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:54:48,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:54:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:48,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-25 19:54:48,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:54:48,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:54:48,848 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:54:48,849 INFO L388 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 26 [2021-11-25 19:54:49,358 INFO L388 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 11 [2021-11-25 19:54:49,374 INFO L388 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 11 [2021-11-25 19:54:49,999 INFO L354 Elim1Store]: treesize reduction 44, result has 31.3 percent of original size [2021-11-25 19:54:50,000 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 71 [2021-11-25 19:54:50,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:50,010 INFO L388 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 27 treesize of output 26 [2021-11-25 19:54:51,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:51,437 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-25 19:54:51,438 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 44 [2021-11-25 19:54:51,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:51,462 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-25 19:54:51,463 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 13 [2021-11-25 19:54:51,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:51,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:54:52,268 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:54:52,268 INFO L388 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 605 treesize of output 607 [2021-11-25 19:54:52,286 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-25 19:54:52,286 INFO L388 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 1729 treesize of output 1649 [2021-11-25 19:54:52,332 INFO L388 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 40 treesize of output 34 [2021-11-25 19:54:53,578 INFO L388 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 40 treesize of output 34 [2021-11-25 19:54:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:54:55,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333964570] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:54:55,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1880991703] [2021-11-25 19:54:55,028 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2021-11-25 19:54:55,028 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:54:55,028 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:54:55,029 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:54:55,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:54:55,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:54:55,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:55,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:55,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:55,284 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-11-25 19:54:55,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2021-11-25 19:54:55,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:55,482 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:54:55,482 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:54:55,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:55,565 INFO L354 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2021-11-25 19:54:55,566 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 247 [2021-11-25 19:54:55,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:55,608 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:54:55,608 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:54:55,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:55,827 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:54:55,828 INFO L388 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 5 case distinctions, treesize of input 267 treesize of output 258 [2021-11-25 19:54:55,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:55,877 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:54:55,878 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:54:55,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:55,988 INFO L354 Elim1Store]: treesize reduction 238, result has 11.5 percent of original size [2021-11-25 19:54:55,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 261 [2021-11-25 19:54:56,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:56,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:56,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:56,204 INFO L354 Elim1Store]: treesize reduction 160, result has 12.6 percent of original size [2021-11-25 19:54:56,204 INFO L388 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 7 case distinctions, treesize of input 274 treesize of output 261 [2021-11-25 19:54:56,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:56,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:56,237 INFO L388 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 0 case distinctions, treesize of input 239 treesize of output 233 [2021-11-25 19:54:56,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:56,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:56,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:56,320 INFO L354 Elim1Store]: treesize reduction 160, result has 12.6 percent of original size [2021-11-25 19:54:56,320 INFO L388 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 7 case distinctions, treesize of input 274 treesize of output 253 [2021-11-25 19:54:56,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:56,622 INFO L354 Elim1Store]: treesize reduction 226, result has 14.7 percent of original size [2021-11-25 19:54:56,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 270 treesize of output 264 [2021-11-25 19:54:56,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:56,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:56,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:56,670 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-25 19:54:56,671 INFO L388 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 3 case distinctions, treesize of input 258 treesize of output 236 [2021-11-25 19:54:56,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:56,764 INFO L354 Elim1Store]: treesize reduction 208, result has 21.5 percent of original size [2021-11-25 19:54:56,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 270 treesize of output 290 [2021-11-25 19:54:57,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:54:57,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:57,110 INFO L354 Elim1Store]: treesize reduction 258, result has 9.2 percent of original size [2021-11-25 19:54:57,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 320 treesize of output 298 [2021-11-25 19:54:57,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:57,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:57,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:57,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:57,158 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:54:57,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 278 treesize of output 256 [2021-11-25 19:54:57,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:54:57,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:57,268 INFO L354 Elim1Store]: treesize reduction 261, result has 8.1 percent of original size [2021-11-25 19:54:57,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 312 treesize of output 279 [2021-11-25 19:54:57,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:57,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:54:57,829 INFO L354 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2021-11-25 19:54:57,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 233 treesize of output 206 [2021-11-25 19:54:58,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:58,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:54:58,266 INFO L354 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2021-11-25 19:54:58,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 233 treesize of output 206 [2021-11-25 19:54:58,816 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:54:58,818 INFO L388 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 17 treesize of output 23 [2021-11-25 19:54:58,877 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:54:58,877 INFO L388 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 [2021-11-25 19:54:58,927 INFO L388 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 23 treesize of output 1 [2021-11-25 19:54:58,935 INFO L388 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 11 [2021-11-25 19:54:58,944 INFO L388 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 11 [2021-11-25 19:54:58,985 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:54:58,986 INFO L388 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 27 treesize of output 34 [2021-11-25 19:54:58,998 INFO L388 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 23 treesize of output 1 [2021-11-25 19:54:59,026 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:54:59,027 INFO L388 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 27 treesize of output 34 [2021-11-25 19:54:59,101 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:54:59,101 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:54:59,174 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:54:59,175 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:54:59,201 INFO L388 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 13 treesize of output 9 [2021-11-25 19:54:59,376 INFO L388 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 11 [2021-11-25 19:54:59,449 INFO L388 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 23 treesize of output 1 [2021-11-25 19:54:59,457 INFO L388 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 11 [2021-11-25 19:54:59,600 INFO L388 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 23 treesize of output 1 [2021-11-25 19:54:59,668 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:54:59,668 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:54:59,697 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:54:59,697 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:55:01,208 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:55:01,208 INFO L388 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 17 treesize of output 23 [2021-11-25 19:55:01,237 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:55:01,237 INFO L388 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 [2021-11-25 19:55:01,256 INFO L388 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 23 treesize of output 1 [2021-11-25 19:55:01,264 INFO L388 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 11 [2021-11-25 19:55:01,269 INFO L388 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 11 [2021-11-25 19:55:01,303 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:55:01,304 INFO L388 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 27 treesize of output 34 [2021-11-25 19:55:01,325 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:55:01,325 INFO L388 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 27 treesize of output 34 [2021-11-25 19:55:01,339 INFO L388 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 23 treesize of output 1 [2021-11-25 19:55:01,395 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:55:01,395 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:55:01,449 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:55:01,450 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:55:01,479 INFO L388 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 13 treesize of output 9 [2021-11-25 19:55:01,590 INFO L354 Elim1Store]: treesize reduction 60, result has 52.8 percent of original size [2021-11-25 19:55:01,591 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2021-11-25 19:55:01,688 INFO L354 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2021-11-25 19:55:01,688 INFO L388 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 27 [2021-11-25 19:55:01,756 INFO L354 Elim1Store]: treesize reduction 60, result has 52.8 percent of original size [2021-11-25 19:55:01,757 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2021-11-25 19:55:02,093 INFO L354 Elim1Store]: treesize reduction 236, result has 12.6 percent of original size [2021-11-25 19:55:02,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 390 treesize of output 299 [2021-11-25 19:55:02,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:02,134 INFO L388 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 47 treesize of output 27 [2021-11-25 19:55:02,229 INFO L354 Elim1Store]: treesize reduction 192, result has 28.9 percent of original size [2021-11-25 19:55:02,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 319 treesize of output 280 [2021-11-25 19:55:15,712 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:55:15,712 INFO L388 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 17 treesize of output 23 [2021-11-25 19:55:15,747 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:55:15,747 INFO L388 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 [2021-11-25 19:55:15,774 INFO L388 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 27 treesize of output 26 [2021-11-25 19:55:15,782 INFO L388 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 27 treesize of output 26 [2021-11-25 19:55:15,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:55:15,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:55:15,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:15,834 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:55:15,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:15,853 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:55:15,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:15,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:15,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:15,889 INFO L388 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 0 case distinctions, treesize of input 53 treesize of output 43 [2021-11-25 19:55:15,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:15,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:15,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:15,910 INFO L388 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 0 case distinctions, treesize of input 53 treesize of output 43 [2021-11-25 19:55:15,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:55:16,013 INFO L388 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 33 treesize of output 13 [2021-11-25 19:55:16,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:16,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2021-11-25 19:55:16,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:16,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2021-11-25 19:55:16,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:16,165 INFO L354 Elim1Store]: treesize reduction 44, result has 31.3 percent of original size [2021-11-25 19:55:16,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 65 [2021-11-25 19:55:16,193 INFO L388 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 33 treesize of output 13 [2021-11-25 19:55:16,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:16,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:16,222 INFO L388 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 0 case distinctions, treesize of input 60 treesize of output 57 [2021-11-25 19:55:16,808 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:55:16,808 INFO L388 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 [2021-11-25 19:55:16,842 INFO L388 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 17 treesize of output 19 [2021-11-25 19:55:16,892 INFO L388 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 23 treesize of output 1 [2021-11-25 19:55:16,897 INFO L388 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 11 [2021-11-25 19:55:16,906 INFO L388 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 11 [2021-11-25 19:55:16,928 INFO L388 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 23 treesize of output 1 [2021-11-25 19:55:16,945 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:55:16,945 INFO L388 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 27 treesize of output 34 [2021-11-25 19:55:16,964 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:55:16,964 INFO L388 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 27 treesize of output 34 [2021-11-25 19:55:17,017 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:55:17,017 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:55:17,039 INFO L388 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 13 treesize of output 9 [2021-11-25 19:55:17,080 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:55:17,083 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:55:17,211 INFO L354 Elim1Store]: treesize reduction 60, result has 52.8 percent of original size [2021-11-25 19:55:17,211 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2021-11-25 19:55:17,304 INFO L354 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2021-11-25 19:55:17,304 INFO L388 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 27 [2021-11-25 19:55:17,390 INFO L354 Elim1Store]: treesize reduction 60, result has 52.8 percent of original size [2021-11-25 19:55:17,390 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2021-11-25 19:55:17,711 INFO L354 Elim1Store]: treesize reduction 192, result has 28.9 percent of original size [2021-11-25 19:55:17,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 401 treesize of output 346 [2021-11-25 19:55:17,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:17,899 INFO L388 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 47 treesize of output 27 [2021-11-25 19:55:17,967 INFO L354 Elim1Store]: treesize reduction 236, result has 12.6 percent of original size [2021-11-25 19:55:17,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 319 treesize of output 252 [2021-11-25 19:55:30,744 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:55:30,745 INFO L388 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 [2021-11-25 19:55:30,753 INFO L388 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 17 treesize of output 19 [2021-11-25 19:55:30,773 INFO L388 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 11 [2021-11-25 19:55:30,781 INFO L388 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 11 [2021-11-25 19:55:30,792 INFO L388 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 23 treesize of output 1 [2021-11-25 19:55:30,825 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:55:30,825 INFO L388 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 27 treesize of output 34 [2021-11-25 19:55:30,837 INFO L388 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 23 treesize of output 1 [2021-11-25 19:55:30,858 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:55:30,858 INFO L388 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 27 treesize of output 34 [2021-11-25 19:55:30,910 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:55:30,910 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:55:30,929 INFO L388 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 13 treesize of output 9 [2021-11-25 19:55:30,969 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:55:30,969 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:55:31,096 INFO L388 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 11 [2021-11-25 19:55:31,150 INFO L388 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 23 treesize of output 1 [2021-11-25 19:55:31,181 INFO L388 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 11 [2021-11-25 19:55:31,311 INFO L388 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 23 treesize of output 1 [2021-11-25 19:55:31,329 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:55:31,330 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:55:31,403 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:55:31,403 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:55:31,683 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:55:31,684 INFO L388 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 17 treesize of output 23 [2021-11-25 19:55:31,726 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:55:31,727 INFO L388 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 [2021-11-25 19:55:31,757 INFO L388 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 27 treesize of output 26 [2021-11-25 19:55:31,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:55:31,782 INFO L388 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 27 treesize of output 26 [2021-11-25 19:55:31,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:31,811 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:55:31,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:55:31,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:31,840 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:55:31,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:55:31,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:31,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:31,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:31,892 INFO L388 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 0 case distinctions, treesize of input 53 treesize of output 43 [2021-11-25 19:55:31,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:31,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:31,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:31,910 INFO L388 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 0 case distinctions, treesize of input 53 treesize of output 43 [2021-11-25 19:55:31,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:31,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2021-11-25 19:55:31,986 INFO L388 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 33 treesize of output 13 [2021-11-25 19:55:32,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:32,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2021-11-25 19:55:32,080 INFO L388 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 33 treesize of output 13 [2021-11-25 19:55:32,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:32,114 INFO L354 Elim1Store]: treesize reduction 44, result has 31.3 percent of original size [2021-11-25 19:55:32,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 65 [2021-11-25 19:55:32,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:32,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:32,129 INFO L388 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 0 case distinctions, treesize of input 60 treesize of output 57 [2021-11-25 19:55:32,618 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:55:32,618 INFO L388 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 [2021-11-25 19:55:32,630 INFO L388 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 17 treesize of output 19 [2021-11-25 19:55:32,661 INFO L388 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 23 treesize of output 1 [2021-11-25 19:55:32,667 INFO L388 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 11 [2021-11-25 19:55:32,676 INFO L388 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 11 [2021-11-25 19:55:32,712 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:55:32,712 INFO L388 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 27 treesize of output 34 [2021-11-25 19:55:32,720 INFO L388 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 23 treesize of output 1 [2021-11-25 19:55:32,741 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:55:32,742 INFO L388 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 27 treesize of output 34 [2021-11-25 19:55:32,765 INFO L388 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 13 treesize of output 9 [2021-11-25 19:55:32,799 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:55:32,800 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:55:32,846 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:55:32,846 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:55:32,967 INFO L388 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 11 [2021-11-25 19:55:32,974 INFO L388 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 23 treesize of output 1 [2021-11-25 19:55:33,029 INFO L388 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 11 [2021-11-25 19:55:33,174 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:55:33,174 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:55:33,184 INFO L388 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 23 treesize of output 1 [2021-11-25 19:55:33,203 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:55:33,203 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:55:34,809 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:55:34,809 INFO L388 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 17 treesize of output 23 [2021-11-25 19:55:34,833 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:55:34,834 INFO L388 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 [2021-11-25 19:55:34,881 INFO L388 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 11 [2021-11-25 19:55:34,888 INFO L388 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 23 treesize of output 1 [2021-11-25 19:55:34,896 INFO L388 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 11 [2021-11-25 19:55:34,927 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:55:34,928 INFO L388 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 27 treesize of output 34 [2021-11-25 19:55:34,957 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:55:34,957 INFO L388 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 27 treesize of output 34 [2021-11-25 19:55:34,970 INFO L388 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 23 treesize of output 1 [2021-11-25 19:55:35,004 INFO L388 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 13 treesize of output 9 [2021-11-25 19:55:35,054 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:55:35,055 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:55:35,122 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:55:35,123 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:55:35,294 INFO L354 Elim1Store]: treesize reduction 60, result has 52.8 percent of original size [2021-11-25 19:55:35,294 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2021-11-25 19:55:35,383 INFO L354 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2021-11-25 19:55:35,384 INFO L388 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 27 [2021-11-25 19:55:35,454 INFO L354 Elim1Store]: treesize reduction 60, result has 52.8 percent of original size [2021-11-25 19:55:35,454 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2021-11-25 19:55:35,853 INFO L354 Elim1Store]: treesize reduction 192, result has 28.9 percent of original size [2021-11-25 19:55:35,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 363 treesize of output 340 [2021-11-25 19:55:36,040 INFO L354 Elim1Store]: treesize reduction 236, result has 12.6 percent of original size [2021-11-25 19:55:36,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 344 treesize of output 253 [2021-11-25 19:55:36,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:36,080 INFO L388 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 47 treesize of output 27 [2021-11-25 19:55:50,446 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2021-11-25 19:55:50,456 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:55:56,562 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19776#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (= (select |#valid| |~#list~0.base|) 1) (= (select (select |#memory_$Pointer$.offset| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.offset|) (<= (+ (* 4 |ULTIMATE.start_main_~end_point~0#1|) |~#list~0.offset| 4) (select |#length| |~#list~0.base|)) (<= |#NULL.offset| 0) (or (and (= ~unnamed2~0~ITEM_NEXT |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_~end_point~0#1|)) (and (= ~unnamed2~0~ITEM_PREV |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_~end_point~0#1|))) (<= |#NULL.base| 0) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (or (not (= 0 |ULTIMATE.start_main_~cursor~0#1.offset|)) (not (= |ULTIMATE.start_main_~cursor~0#1.base| 0))) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.base|) (or (< (select |#length| |ULTIMATE.start_main_~cursor~0#1.base|) (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) 4 |ULTIMATE.start_main_~cursor~0#1.offset|)) (< (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) |ULTIMATE.start_main_~cursor~0#1.offset|) 0)) (<= |~#list~0.offset| 0))' at error location [2021-11-25 19:55:56,562 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:55:56,562 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:55:56,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 39 [2021-11-25 19:55:56,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033129096] [2021-11-25 19:55:56,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:55:56,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-25 19:55:56,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:55:56,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-25 19:55:56,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=3403, Unknown=0, NotChecked=0, Total=3660 [2021-11-25 19:55:56,565 INFO L87 Difference]: Start difference. First operand 422 states and 563 transitions. Second operand has 40 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 39 states have internal predecessors, (90), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:56:00,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:00,497 INFO L93 Difference]: Finished difference Result 726 states and 933 transitions. [2021-11-25 19:56:00,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-25 19:56:00,498 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 39 states have internal predecessors, (90), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2021-11-25 19:56:00,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:00,501 INFO L225 Difference]: With dead ends: 726 [2021-11-25 19:56:00,501 INFO L226 Difference]: Without dead ends: 726 [2021-11-25 19:56:00,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1980 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=520, Invalid=6286, Unknown=0, NotChecked=0, Total=6806 [2021-11-25 19:56:00,504 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 423 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 1870 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 2045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:00,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1988 Invalid, 2045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1870 Invalid, 0 Unknown, 153 Unchecked, 1.5s Time] [2021-11-25 19:56:00,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-11-25 19:56:00,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 627. [2021-11-25 19:56:00,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 546 states have (on average 1.4945054945054945) internal successors, (816), 589 states have internal predecessors, (816), 35 states have call successors, (35), 12 states have call predecessors, (35), 12 states have return successors, (35), 25 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-25 19:56:00,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 886 transitions. [2021-11-25 19:56:00,527 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 886 transitions. Word has length 32 [2021-11-25 19:56:00,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:00,528 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 886 transitions. [2021-11-25 19:56:00,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 39 states have internal predecessors, (90), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:56:00,528 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 886 transitions. [2021-11-25 19:56:00,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:56:00,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:00,529 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:00,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:56:00,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-25 19:56:00,755 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:56:00,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:00,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1992691982, now seen corresponding path program 1 times [2021-11-25 19:56:00,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:00,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991944490] [2021-11-25 19:56:00,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:00,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:01,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:01,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991944490] [2021-11-25 19:56:01,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991944490] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:56:01,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005463014] [2021-11-25 19:56:01,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:01,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:56:01,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:56:01,212 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:56:01,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:56:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:01,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-25 19:56:01,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:56:01,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:01,728 INFO L388 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 0 case distinctions, treesize of input 52 treesize of output 43 [2021-11-25 19:56:01,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:01,732 INFO L388 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 41 treesize of output 40 [2021-11-25 19:56:01,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:01,906 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:56:01,907 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 47 [2021-11-25 19:56:01,913 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:56:01,913 INFO L388 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 25 treesize of output 25 [2021-11-25 19:56:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:01,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:56:01,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005463014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:01,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:56:01,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 23 [2021-11-25 19:56:01,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920255816] [2021-11-25 19:56:01,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:01,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 19:56:01,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:01,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 19:56:01,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-11-25 19:56:01,962 INFO L87 Difference]: Start difference. First operand 627 states and 886 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 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) [2021-11-25 19:56:02,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:02,875 INFO L93 Difference]: Finished difference Result 871 states and 1174 transitions. [2021-11-25 19:56:02,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 19:56:02,887 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 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 32 [2021-11-25 19:56:02,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:02,892 INFO L225 Difference]: With dead ends: 871 [2021-11-25 19:56:02,893 INFO L226 Difference]: Without dead ends: 871 [2021-11-25 19:56:02,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 19:56:02,894 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 621 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:02,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 945 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:56:02,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2021-11-25 19:56:02,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 712. [2021-11-25 19:56:02,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 623 states have (on average 1.5088282504012842) internal successors, (940), 669 states have internal predecessors, (940), 41 states have call successors, (41), 14 states have call predecessors, (41), 14 states have return successors, (41), 28 states have call predecessors, (41), 41 states have call successors, (41) [2021-11-25 19:56:02,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1022 transitions. [2021-11-25 19:56:02,928 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1022 transitions. Word has length 32 [2021-11-25 19:56:02,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:02,929 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 1022 transitions. [2021-11-25 19:56:02,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 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) [2021-11-25 19:56:02,929 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1022 transitions. [2021-11-25 19:56:02,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:56:02,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:02,930 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:02,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:56:03,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:56:03,143 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:56:03,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:03,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1992693329, now seen corresponding path program 1 times [2021-11-25 19:56:03,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:03,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064906146] [2021-11-25 19:56:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:03,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:04,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:04,336 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:04,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064906146] [2021-11-25 19:56:04,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064906146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:04,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:04,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-25 19:56:04,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844170318] [2021-11-25 19:56:04,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:04,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:56:04,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:04,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:56:04,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:56:04,339 INFO L87 Difference]: Start difference. First operand 712 states and 1022 transitions. Second operand has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2021-11-25 19:56:06,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:06,453 INFO L93 Difference]: Finished difference Result 918 states and 1268 transitions. [2021-11-25 19:56:06,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-25 19:56:06,454 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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 32 [2021-11-25 19:56:06,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:06,458 INFO L225 Difference]: With dead ends: 918 [2021-11-25 19:56:06,458 INFO L226 Difference]: Without dead ends: 918 [2021-11-25 19:56:06,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=299, Invalid=1033, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 19:56:06,459 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 732 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:06,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [736 Valid, 1042 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 19:56:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-11-25 19:56:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 722. [2021-11-25 19:56:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 631 states have (on average 1.5071315372424723) internal successors, (951), 677 states have internal predecessors, (951), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 29 states have call predecessors, (43), 43 states have call successors, (43) [2021-11-25 19:56:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1037 transitions. [2021-11-25 19:56:06,484 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1037 transitions. Word has length 32 [2021-11-25 19:56:06,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:06,484 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 1037 transitions. [2021-11-25 19:56:06,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2021-11-25 19:56:06,485 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1037 transitions. [2021-11-25 19:56:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:56:06,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:06,486 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:06,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-25 19:56:06,486 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:56:06,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:06,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1992693328, now seen corresponding path program 1 times [2021-11-25 19:56:06,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:06,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597004017] [2021-11-25 19:56:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:06,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:07,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:07,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597004017] [2021-11-25 19:56:07,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597004017] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:56:07,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851668608] [2021-11-25 19:56:07,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:07,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:56:07,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:56:07,498 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:56:07,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:56:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:07,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-25 19:56:07,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:56:07,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:07,809 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:56:07,809 INFO L388 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 26 [2021-11-25 19:56:08,162 INFO L388 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 11 [2021-11-25 19:56:08,168 INFO L388 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 11 [2021-11-25 19:56:08,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:08,657 INFO L388 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 0 case distinctions, treesize of input 88 treesize of output 55 [2021-11-25 19:56:08,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:08,671 INFO L388 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 27 treesize of output 26 [2021-11-25 19:56:09,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:09,118 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-25 19:56:09,118 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 38 [2021-11-25 19:56:09,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:09,128 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-25 19:56:09,129 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 13 [2021-11-25 19:56:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:09,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:56:09,793 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:56:09,794 INFO L388 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 605 treesize of output 607 [2021-11-25 19:56:09,806 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-25 19:56:09,806 INFO L388 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 1729 treesize of output 1649 [2021-11-25 19:56:09,833 INFO L388 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 40 treesize of output 34 [2021-11-25 19:56:10,665 INFO L388 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 40 treesize of output 34 [2021-11-25 19:56:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:11,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851668608] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:56:11,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:56:11,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [12, 13] total 38 [2021-11-25 19:56:11,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383665306] [2021-11-25 19:56:11,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:11,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 19:56:11,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:11,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 19:56:11,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1358, Unknown=0, NotChecked=0, Total=1482 [2021-11-25 19:56:11,544 INFO L87 Difference]: Start difference. First operand 722 states and 1037 transitions. Second operand has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 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) [2021-11-25 19:56:15,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:15,954 INFO L93 Difference]: Finished difference Result 900 states and 1221 transitions. [2021-11-25 19:56:15,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:56:15,955 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 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 32 [2021-11-25 19:56:15,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:15,959 INFO L225 Difference]: With dead ends: 900 [2021-11-25 19:56:15,959 INFO L226 Difference]: Without dead ends: 900 [2021-11-25 19:56:15,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=328, Invalid=2752, Unknown=0, NotChecked=0, Total=3080 [2021-11-25 19:56:15,961 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 578 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:15,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 1253 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 19:56:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-11-25 19:56:15,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 765. [2021-11-25 19:56:15,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 671 states have (on average 1.5126676602086437) internal successors, (1015), 718 states have internal predecessors, (1015), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 30 states have call predecessors, (45), 45 states have call successors, (45) [2021-11-25 19:56:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1105 transitions. [2021-11-25 19:56:15,990 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1105 transitions. Word has length 32 [2021-11-25 19:56:15,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:15,990 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1105 transitions. [2021-11-25 19:56:15,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 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) [2021-11-25 19:56:15,991 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1105 transitions. [2021-11-25 19:56:15,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 19:56:15,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:15,992 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:16,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:56:16,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:56:16,219 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:56:16,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:16,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1399931815, now seen corresponding path program 1 times [2021-11-25 19:56:16,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:16,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463117897] [2021-11-25 19:56:16,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:16,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:16,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:56:16,295 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:16,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463117897] [2021-11-25 19:56:16,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463117897] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:56:16,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627150213] [2021-11-25 19:56:16,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:16,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:56:16,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:56:16,297 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:56:16,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:56:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:16,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 19:56:16,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:56:16,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:16,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:56:16,644 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-25 19:56:16,644 INFO L388 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 12 treesize of output 11 [2021-11-25 19:56:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:56:16,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627150213] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:56:16,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [135859015] [2021-11-25 19:56:16,679 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2021-11-25 19:56:16,679 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:56:16,679 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:56:16,680 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:56:16,680 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:56:17,727 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 54 for LOIs [2021-11-25 19:56:17,746 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:56:19,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [135859015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:19,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:56:19,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6, 5, 5] total 23 [2021-11-25 19:56:19,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804655020] [2021-11-25 19:56:19,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:19,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:56:19,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:19,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:56:19,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-11-25 19:56:19,641 INFO L87 Difference]: Start difference. First operand 765 states and 1105 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 10 states have internal predecessors, (26), 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) [2021-11-25 19:56:20,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:20,228 INFO L93 Difference]: Finished difference Result 607 states and 877 transitions. [2021-11-25 19:56:20,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 19:56:20,229 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 10 states have internal predecessors, (26), 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 34 [2021-11-25 19:56:20,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:20,232 INFO L225 Difference]: With dead ends: 607 [2021-11-25 19:56:20,232 INFO L226 Difference]: Without dead ends: 607 [2021-11-25 19:56:20,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-11-25 19:56:20,233 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 15 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:20,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 278 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:56:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-11-25 19:56:20,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2021-11-25 19:56:20,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 526 states have (on average 1.5304182509505704) internal successors, (805), 570 states have internal predecessors, (805), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 24 states have call predecessors, (36), 36 states have call successors, (36) [2021-11-25 19:56:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 877 transitions. [2021-11-25 19:56:20,250 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 877 transitions. Word has length 34 [2021-11-25 19:56:20,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:20,250 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 877 transitions. [2021-11-25 19:56:20,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 10 states have internal predecessors, (26), 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) [2021-11-25 19:56:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 877 transitions. [2021-11-25 19:56:20,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 19:56:20,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:20,251 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:20,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:56:20,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-25 19:56:20,467 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:56:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash -140435570, now seen corresponding path program 1 times [2021-11-25 19:56:20,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:20,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462353221] [2021-11-25 19:56:20,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:20,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:21,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:21,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462353221] [2021-11-25 19:56:21,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462353221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:21,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:21,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-25 19:56:21,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047242894] [2021-11-25 19:56:21,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:21,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:56:21,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:21,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:56:21,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:56:21,308 INFO L87 Difference]: Start difference. First operand 607 states and 877 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 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) [2021-11-25 19:56:22,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:22,254 INFO L93 Difference]: Finished difference Result 501 states and 641 transitions. [2021-11-25 19:56:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:56:22,255 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 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 33 [2021-11-25 19:56:22,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:22,257 INFO L225 Difference]: With dead ends: 501 [2021-11-25 19:56:22,257 INFO L226 Difference]: Without dead ends: 501 [2021-11-25 19:56:22,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:56:22,257 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 848 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:22,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 517 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:56:22,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-11-25 19:56:22,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 402. [2021-11-25 19:56:22,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 339 states have (on average 1.4837758112094395) internal successors, (503), 377 states have internal predecessors, (503), 21 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (21), 15 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-25 19:56:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 545 transitions. [2021-11-25 19:56:22,272 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 545 transitions. Word has length 33 [2021-11-25 19:56:22,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:22,272 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 545 transitions. [2021-11-25 19:56:22,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 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) [2021-11-25 19:56:22,273 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 545 transitions. [2021-11-25 19:56:22,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 19:56:22,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:22,274 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:22,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-25 19:56:22,274 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:56:22,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:22,275 INFO L85 PathProgramCache]: Analyzing trace with hash -858528352, now seen corresponding path program 1 times [2021-11-25 19:56:22,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:22,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485693047] [2021-11-25 19:56:22,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:22,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:22,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:56:22,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:22,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485693047] [2021-11-25 19:56:22,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485693047] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:56:22,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454182612] [2021-11-25 19:56:22,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:22,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:56:22,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:56:22,435 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:56:22,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 19:56:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:22,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:56:22,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:56:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:56:22,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:56:22,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454182612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:22,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:56:22,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2021-11-25 19:56:22,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945870479] [2021-11-25 19:56:22,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:22,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:56:22,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:56:22,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:56:22,661 INFO L87 Difference]: Start difference. First operand 402 states and 545 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:56:22,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:22,727 INFO L93 Difference]: Finished difference Result 531 states and 707 transitions. [2021-11-25 19:56:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:56:22,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2021-11-25 19:56:22,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:22,730 INFO L225 Difference]: With dead ends: 531 [2021-11-25 19:56:22,730 INFO L226 Difference]: Without dead ends: 531 [2021-11-25 19:56:22,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:56:22,731 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 176 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:22,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 206 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:56:22,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-11-25 19:56:22,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 401. [2021-11-25 19:56:22,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 339 states have (on average 1.471976401179941) internal successors, (499), 376 states have internal predecessors, (499), 21 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (21), 15 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-25 19:56:22,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 541 transitions. [2021-11-25 19:56:22,743 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 541 transitions. Word has length 34 [2021-11-25 19:56:22,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:22,743 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 541 transitions. [2021-11-25 19:56:22,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:56:22,743 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 541 transitions. [2021-11-25 19:56:22,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 19:56:22,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:22,744 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:22,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:56:22,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-25 19:56:22,967 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:56:22,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:22,968 INFO L85 PathProgramCache]: Analyzing trace with hash -511271089, now seen corresponding path program 1 times [2021-11-25 19:56:22,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:22,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649013808] [2021-11-25 19:56:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:22,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:56:23,814 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:23,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649013808] [2021-11-25 19:56:23,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649013808] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:56:23,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265990350] [2021-11-25 19:56:23,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:23,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:56:23,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:56:23,815 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:56:23,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 19:56:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:23,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-25 19:56:23,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:56:24,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:24,065 INFO L388 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 16 treesize of output 12 [2021-11-25 19:56:24,072 INFO L388 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 [2021-11-25 19:56:24,250 INFO L388 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 11 [2021-11-25 19:56:24,482 INFO L354 Elim1Store]: treesize reduction 44, result has 31.3 percent of original size [2021-11-25 19:56:24,482 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 43 [2021-11-25 19:56:24,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:24,969 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-25 19:56:24,969 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 19 [2021-11-25 19:56:24,984 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:56:24,984 INFO L388 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 [2021-11-25 19:56:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:25,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:56:25,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265990350] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:56:25,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [777966368] [2021-11-25 19:56:25,266 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-25 19:56:25,266 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:56:25,267 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:56:25,267 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:56:25,267 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:56:25,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:25,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:25,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:25,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:25,455 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-11-25 19:56:25,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2021-11-25 19:56:25,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:25,575 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:56:25,576 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:56:25,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:25,637 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:56:25,637 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:56:25,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:25,660 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:56:25,660 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:56:25,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:25,789 INFO L354 Elim1Store]: treesize reduction 230, result has 14.5 percent of original size [2021-11-25 19:56:25,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2021-11-25 19:56:25,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:25,856 INFO L354 Elim1Store]: treesize reduction 230, result has 14.5 percent of original size [2021-11-25 19:56:25,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2021-11-25 19:56:25,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:25,891 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:56:25,891 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:56:25,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:25,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:25,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,024 INFO L354 Elim1Store]: treesize reduction 280, result has 8.5 percent of original size [2021-11-25 19:56:26,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 286 treesize of output 264 [2021-11-25 19:56:26,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,097 INFO L354 Elim1Store]: treesize reduction 272, result has 11.1 percent of original size [2021-11-25 19:56:26,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 286 treesize of output 272 [2021-11-25 19:56:26,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,111 INFO L388 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 0 case distinctions, treesize of input 247 treesize of output 241 [2021-11-25 19:56:26,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,303 INFO L354 Elim1Store]: treesize reduction 226, result has 14.7 percent of original size [2021-11-25 19:56:26,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 280 treesize of output 272 [2021-11-25 19:56:26,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,335 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-25 19:56:26,336 INFO L388 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 3 case distinctions, treesize of input 254 treesize of output 232 [2021-11-25 19:56:26,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,414 INFO L354 Elim1Store]: treesize reduction 274, result has 17.2 percent of original size [2021-11-25 19:56:26,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 270 treesize of output 278 [2021-11-25 19:56:26,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:26,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,665 INFO L354 Elim1Store]: treesize reduction 242, result has 14.8 percent of original size [2021-11-25 19:56:26,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 317 treesize of output 307 [2021-11-25 19:56:26,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,692 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:56:26,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 260 treesize of output 238 [2021-11-25 19:56:26,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:26,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:26,744 INFO L354 Elim1Store]: treesize reduction 210, result has 9.9 percent of original size [2021-11-25 19:56:26,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 296 treesize of output 284 [2021-11-25 19:56:27,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:27,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:27,079 INFO L354 Elim1Store]: treesize reduction 143, result has 7.1 percent of original size [2021-11-25 19:56:27,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 231 treesize of output 192 [2021-11-25 19:56:27,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:27,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:27,452 INFO L354 Elim1Store]: treesize reduction 143, result has 7.1 percent of original size [2021-11-25 19:56:27,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 231 treesize of output 192 [2021-11-25 19:56:27,893 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:56:27,894 INFO L388 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 [2021-11-25 19:56:27,901 INFO L388 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 17 treesize of output 19 [2021-11-25 19:56:27,922 INFO L388 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 27 treesize of output 26 [2021-11-25 19:56:27,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:56:27,945 INFO L388 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 27 treesize of output 26 [2021-11-25 19:56:28,009 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:56:28,009 INFO L388 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 38 treesize of output 48 [2021-11-25 19:56:28,033 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:56:28,033 INFO L388 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 38 treesize of output 48 [2021-11-25 19:56:28,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:56:28,109 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:56:28,109 INFO L388 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 61 treesize of output 75 [2021-11-25 19:56:28,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:56:28,166 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:56:28,166 INFO L388 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 61 treesize of output 75 [2021-11-25 19:56:28,319 INFO L388 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 11 [2021-11-25 19:56:28,335 INFO L388 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 11 [2021-11-25 19:56:28,343 INFO L388 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 23 treesize of output 1 [2021-11-25 19:56:28,397 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:56:28,397 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:56:28,420 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:56:28,420 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:56:28,431 INFO L388 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 23 treesize of output 1 [2021-11-25 19:56:29,284 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:56:29,284 INFO L388 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 17 treesize of output 23 [2021-11-25 19:56:29,315 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:56:29,316 INFO L388 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 [2021-11-25 19:56:29,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:56:29,358 INFO L388 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 27 treesize of output 26 [2021-11-25 19:56:29,369 INFO L388 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 27 treesize of output 26 [2021-11-25 19:56:29,416 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:56:29,416 INFO L388 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 38 treesize of output 48 [2021-11-25 19:56:29,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:56:29,446 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:56:29,446 INFO L388 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 38 treesize of output 48 [2021-11-25 19:56:29,526 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:56:29,526 INFO L388 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 61 treesize of output 75 [2021-11-25 19:56:29,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:56:29,587 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:56:29,588 INFO L388 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 61 treesize of output 75 [2021-11-25 19:56:29,686 INFO L388 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 11 [2021-11-25 19:56:29,697 INFO L388 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 23 treesize of output 1 [2021-11-25 19:56:29,705 INFO L388 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 11 [2021-11-25 19:56:29,753 INFO L388 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 23 treesize of output 1 [2021-11-25 19:56:29,777 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:56:29,777 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:56:29,800 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:56:29,800 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:56:29,995 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:56:29,995 INFO L388 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 17 treesize of output 23 [2021-11-25 19:56:30,029 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:56:30,029 INFO L388 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 [2021-11-25 19:56:30,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:56:30,063 INFO L388 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 27 treesize of output 26 [2021-11-25 19:56:30,071 INFO L388 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 27 treesize of output 26 [2021-11-25 19:56:30,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:56:30,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:30,142 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:56:30,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:30,153 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:56:30,161 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2021-11-25 19:56:30,172 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:56:34,223 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '30127#(and (<= |~#list~0.base| 3) (<= |ULTIMATE.start_main_#t~ret23#1| 2147483647) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_append_one_#in~to#1| 2147483647) (<= |ULTIMATE.start_create_item_#in~at#1| 2147483647) (<= |ULTIMATE.start_append_one_~to#1| 2147483647) (<= |ULTIMATE.start_append_one_~list#1.base| 3) (<= |ULTIMATE.start_append_one_#in~list#1.offset| 0) (<= 0 |ULTIMATE.start_append_one_~list#1.offset|) (<= |ULTIMATE.start_append_one_~list#1.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_append_one_~to#1|)) (<= 0 |ULTIMATE.start_create_item_~head~0#1.offset|) (or (not (= |ULTIMATE.start_create_item_~link#1.offset| 0)) (not (= |ULTIMATE.start_create_item_~link#1.base| 0))) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_create_item_~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_append_one_#in~to#1| 2147483648)) (<= 0 |ULTIMATE.start_append_one_#in~list#1.offset|) (<= 3 |ULTIMATE.start_append_one_~list#1.base|) (<= 0 |ULTIMATE.start_create_item_~item~0#1.offset|) (<= |#NULL.base| 0) (not (= (select |#valid| |ULTIMATE.start_create_item_~link#1.base|) 1)) (<= 0 (+ |ULTIMATE.start_create_item_~at#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_create_item_#in~at#1| 2147483648)) (<= |ULTIMATE.start_create_item_~item~0#1.offset| 0) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_create_item_~head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_append_one_#in~list#1.base| 3) (<= |~#list~0.offset| 0) (<= 0 (+ |ULTIMATE.start_main_#t~ret23#1| 2147483648)) (<= 3 |ULTIMATE.start_append_one_#in~list#1.base|))' at error location [2021-11-25 19:56:34,223 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:56:34,223 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:56:34,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 30 [2021-11-25 19:56:34,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441497141] [2021-11-25 19:56:34,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:56:34,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-25 19:56:34,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:34,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-25 19:56:34,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=2710, Unknown=0, NotChecked=0, Total=2970 [2021-11-25 19:56:34,225 INFO L87 Difference]: Start difference. First operand 401 states and 541 transitions. Second operand has 31 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:56:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:36,550 INFO L93 Difference]: Finished difference Result 625 states and 822 transitions. [2021-11-25 19:56:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-25 19:56:36,550 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2021-11-25 19:56:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:36,553 INFO L225 Difference]: With dead ends: 625 [2021-11-25 19:56:36,554 INFO L226 Difference]: Without dead ends: 625 [2021-11-25 19:56:36,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1786 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=545, Invalid=5775, Unknown=0, NotChecked=0, Total=6320 [2021-11-25 19:56:36,556 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 265 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 337 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:36,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 1819 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1591 Invalid, 0 Unknown, 337 Unchecked, 0.8s Time] [2021-11-25 19:56:36,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-11-25 19:56:36,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 543. [2021-11-25 19:56:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 470 states have (on average 1.4914893617021276) internal successors, (701), 508 states have internal predecessors, (701), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (29), 22 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-25 19:56:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 759 transitions. [2021-11-25 19:56:36,572 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 759 transitions. Word has length 34 [2021-11-25 19:56:36,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:36,572 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 759 transitions. [2021-11-25 19:56:36,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:56:36,572 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 759 transitions. [2021-11-25 19:56:36,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 19:56:36,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:36,573 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:36,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:56:36,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-25 19:56:36,787 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:56:36,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:36,788 INFO L85 PathProgramCache]: Analyzing trace with hash -511271088, now seen corresponding path program 1 times [2021-11-25 19:56:36,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:36,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604071712] [2021-11-25 19:56:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:36,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:37,865 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:56:37,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:37,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604071712] [2021-11-25 19:56:37,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604071712] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:56:37,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491224492] [2021-11-25 19:56:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:37,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:56:37,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:56:37,867 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:56:37,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 19:56:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:38,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-25 19:56:38,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:56:38,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:38,152 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:56:38,153 INFO L388 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 26 [2021-11-25 19:56:38,175 INFO L388 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 [2021-11-25 19:56:38,519 INFO L388 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 11 [2021-11-25 19:56:38,524 INFO L388 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 11 [2021-11-25 19:56:39,020 INFO L354 Elim1Store]: treesize reduction 44, result has 31.3 percent of original size [2021-11-25 19:56:39,020 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 76 [2021-11-25 19:56:39,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:39,026 INFO L388 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 27 treesize of output 26 [2021-11-25 19:56:43,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:43,031 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-25 19:56:43,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 56 treesize of output 63 [2021-11-25 19:56:43,052 INFO L354 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-11-25 19:56:43,052 INFO L388 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 19 treesize of output 19 [2021-11-25 19:56:43,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:43,089 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-25 19:56:43,090 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 13 [2021-11-25 19:56:43,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:43,116 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-25 19:56:43,117 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 47 [2021-11-25 19:56:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:43,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:56:44,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491224492] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:56:44,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [69236183] [2021-11-25 19:56:44,201 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-25 19:56:44,201 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:56:44,201 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:56:44,201 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:56:44,202 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:56:44,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:44,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:44,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:44,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:44,374 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-11-25 19:56:44,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2021-11-25 19:56:44,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:44,488 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:56:44,488 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:56:44,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:44,533 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:56:44,534 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:56:44,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:44,596 INFO L354 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2021-11-25 19:56:44,596 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 247 [2021-11-25 19:56:44,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:44,776 INFO L354 Elim1Store]: treesize reduction 230, result has 14.5 percent of original size [2021-11-25 19:56:44,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2021-11-25 19:56:44,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:44,841 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:56:44,841 INFO L388 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 5 case distinctions, treesize of input 267 treesize of output 258 [2021-11-25 19:56:44,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:44,874 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:56:44,874 INFO L388 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 1 case distinctions, treesize of input 249 treesize of output 224 [2021-11-25 19:56:44,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:44,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:44,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,063 INFO L354 Elim1Store]: treesize reduction 272, result has 11.1 percent of original size [2021-11-25 19:56:45,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 278 treesize of output 264 [2021-11-25 19:56:45,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,116 INFO L354 Elim1Store]: treesize reduction 160, result has 12.6 percent of original size [2021-11-25 19:56:45,116 INFO L388 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 7 case distinctions, treesize of input 274 treesize of output 261 [2021-11-25 19:56:45,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,130 INFO L388 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 0 case distinctions, treesize of input 239 treesize of output 233 [2021-11-25 19:56:45,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,349 INFO L354 Elim1Store]: treesize reduction 274, result has 17.2 percent of original size [2021-11-25 19:56:45,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 282 treesize of output 290 [2021-11-25 19:56:45,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,387 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-25 19:56:45,387 INFO L388 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 3 case distinctions, treesize of input 246 treesize of output 224 [2021-11-25 19:56:45,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,465 INFO L354 Elim1Store]: treesize reduction 226, result has 14.7 percent of original size [2021-11-25 19:56:45,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 258 treesize of output 252 [2021-11-25 19:56:45,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:45,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,720 INFO L354 Elim1Store]: treesize reduction 242, result has 14.8 percent of original size [2021-11-25 19:56:45,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 321 treesize of output 311 [2021-11-25 19:56:45,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,746 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:56:45,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 264 treesize of output 242 [2021-11-25 19:56:45,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:45,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:45,796 INFO L354 Elim1Store]: treesize reduction 210, result has 9.9 percent of original size [2021-11-25 19:56:45,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 298 treesize of output 284 [2021-11-25 19:56:46,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:46,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:46,114 INFO L354 Elim1Store]: treesize reduction 143, result has 7.1 percent of original size [2021-11-25 19:56:46,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 249 treesize of output 210 [2021-11-25 19:56:46,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:46,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:46,439 INFO L354 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2021-11-25 19:56:46,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 233 treesize of output 206 [2021-11-25 19:56:46,796 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:56:46,796 INFO L388 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 [2021-11-25 19:56:46,808 INFO L388 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 17 treesize of output 19 [2021-11-25 19:56:46,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:56:46,836 INFO L388 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 27 treesize of output 26 [2021-11-25 19:56:46,850 INFO L388 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 27 treesize of output 26 [2021-11-25 19:56:46,889 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:56:46,889 INFO L388 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 38 treesize of output 48 [2021-11-25 19:56:46,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:56:46,919 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:56:46,919 INFO L388 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 38 treesize of output 48 [2021-11-25 19:56:46,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:56:46,996 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:56:46,996 INFO L388 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 61 treesize of output 75 [2021-11-25 19:56:47,056 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:56:47,056 INFO L388 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 61 treesize of output 75 [2021-11-25 19:56:47,207 INFO L388 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 23 treesize of output 1 [2021-11-25 19:56:47,217 INFO L388 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 11 [2021-11-25 19:56:47,227 INFO L388 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 11 [2021-11-25 19:56:47,265 INFO L388 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 23 treesize of output 1 [2021-11-25 19:56:47,286 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:56:47,286 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:56:47,311 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:56:47,312 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:56:48,287 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:56:48,287 INFO L388 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 17 treesize of output 23 [2021-11-25 19:56:48,311 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:56:48,312 INFO L388 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 [2021-11-25 19:56:48,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:56:48,358 INFO L388 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 27 treesize of output 26 [2021-11-25 19:56:48,367 INFO L388 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 27 treesize of output 26 [2021-11-25 19:56:48,406 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:56:48,406 INFO L388 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 38 treesize of output 48 [2021-11-25 19:56:48,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:56:48,445 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:56:48,446 INFO L388 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 38 treesize of output 48 [2021-11-25 19:56:48,506 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:56:48,506 INFO L388 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 61 treesize of output 75 [2021-11-25 19:56:48,563 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:56:48,563 INFO L388 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 61 treesize of output 75 [2021-11-25 19:56:48,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:56:48,724 INFO L388 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 11 [2021-11-25 19:56:48,731 INFO L388 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 23 treesize of output 1 [2021-11-25 19:56:48,741 INFO L388 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 11 [2021-11-25 19:56:48,790 INFO L388 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 23 treesize of output 1 [2021-11-25 19:56:48,807 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:56:48,807 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:56:48,832 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:56:48,832 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:56:49,031 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:56:49,032 INFO L388 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 17 treesize of output 23 [2021-11-25 19:56:49,055 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:56:49,055 INFO L388 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 [2021-11-25 19:56:49,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:56:49,098 INFO L388 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 27 treesize of output 26 [2021-11-25 19:56:49,107 INFO L388 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 27 treesize of output 26 [2021-11-25 19:56:49,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:56:49,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:49,146 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:56:49,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:49,162 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:56:49,170 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2021-11-25 19:56:49,179 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:56:53,477 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31530#(and (<= |~#list~0.base| 3) (<= |ULTIMATE.start_main_#t~ret23#1| 2147483647) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_append_one_#in~to#1| 2147483647) (<= |ULTIMATE.start_create_item_#in~at#1| 2147483647) (<= |ULTIMATE.start_append_one_~to#1| 2147483647) (<= |ULTIMATE.start_append_one_~list#1.base| 3) (<= |ULTIMATE.start_append_one_#in~list#1.offset| 0) (<= 0 |ULTIMATE.start_append_one_~list#1.offset|) (<= |ULTIMATE.start_append_one_~list#1.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_append_one_~to#1|)) (<= 0 |ULTIMATE.start_create_item_~head~0#1.offset|) (or (not (= |ULTIMATE.start_create_item_~link#1.offset| 0)) (not (= |ULTIMATE.start_create_item_~link#1.base| 0))) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_create_item_~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_append_one_#in~to#1| 2147483648)) (<= 0 |ULTIMATE.start_append_one_#in~list#1.offset|) (<= 3 |ULTIMATE.start_append_one_~list#1.base|) (<= 0 |ULTIMATE.start_create_item_~item~0#1.offset|) (<= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_create_item_~at#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_create_item_#in~at#1| 2147483648)) (<= |ULTIMATE.start_create_item_~item~0#1.offset| 0) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_create_item_~head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_append_one_#in~list#1.base| 3) (<= |~#list~0.offset| 0) (or (< (+ |ULTIMATE.start_create_item_~link#1.offset| (* 4 |ULTIMATE.start_create_item_~term_field~0#1|)) 0) (< (select |#length| |ULTIMATE.start_create_item_~link#1.base|) (+ |ULTIMATE.start_create_item_~link#1.offset| 4 (* 4 |ULTIMATE.start_create_item_~term_field~0#1|)))) (<= 0 (+ |ULTIMATE.start_main_#t~ret23#1| 2147483648)) (<= 3 |ULTIMATE.start_append_one_#in~list#1.base|))' at error location [2021-11-25 19:56:53,478 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:56:53,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:56:53,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 33 [2021-11-25 19:56:53,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045962666] [2021-11-25 19:56:53,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:56:53,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-25 19:56:53,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:53,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-25 19:56:53,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=3158, Unknown=0, NotChecked=0, Total=3422 [2021-11-25 19:56:53,480 INFO L87 Difference]: Start difference. First operand 543 states and 759 transitions. Second operand has 34 states, 31 states have (on average 1.903225806451613) internal successors, (59), 30 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:56:57,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:56:57,502 INFO L93 Difference]: Finished difference Result 619 states and 813 transitions. [2021-11-25 19:56:57,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-25 19:56:57,502 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 1.903225806451613) internal successors, (59), 30 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2021-11-25 19:56:57,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:56:57,505 INFO L225 Difference]: With dead ends: 619 [2021-11-25 19:56:57,505 INFO L226 Difference]: Without dead ends: 619 [2021-11-25 19:56:57,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2242 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=628, Invalid=7382, Unknown=0, NotChecked=0, Total=8010 [2021-11-25 19:56:57,508 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 351 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 379 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:56:57,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 1625 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1548 Invalid, 0 Unknown, 379 Unchecked, 1.0s Time] [2021-11-25 19:56:57,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-11-25 19:56:57,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 547. [2021-11-25 19:56:57,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 472 states have (on average 1.4830508474576272) internal successors, (700), 510 states have internal predecessors, (700), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 22 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-25 19:56:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 758 transitions. [2021-11-25 19:56:57,523 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 758 transitions. Word has length 34 [2021-11-25 19:56:57,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:56:57,523 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 758 transitions. [2021-11-25 19:56:57,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 1.903225806451613) internal successors, (59), 30 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:56:57,524 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 758 transitions. [2021-11-25 19:56:57,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 19:56:57,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:56:57,525 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:56:57,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:56:57,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-25 19:56:57,751 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:56:57,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:56:57,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1643950005, now seen corresponding path program 1 times [2021-11-25 19:56:57,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:56:57,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556824949] [2021-11-25 19:56:57,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:56:57,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:56:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:56:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:56:58,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:56:58,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556824949] [2021-11-25 19:56:58,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556824949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:56:58,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:56:58,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 19:56:58,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210706501] [2021-11-25 19:56:58,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:56:58,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 19:56:58,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:56:58,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 19:56:58,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:56:58,528 INFO L87 Difference]: Start difference. First operand 547 states and 758 transitions. Second operand has 15 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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) [2021-11-25 19:57:00,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:00,325 INFO L93 Difference]: Finished difference Result 655 states and 868 transitions. [2021-11-25 19:57:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:57:00,325 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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 33 [2021-11-25 19:57:00,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:00,328 INFO L225 Difference]: With dead ends: 655 [2021-11-25 19:57:00,328 INFO L226 Difference]: Without dead ends: 655 [2021-11-25 19:57:00,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=269, Invalid=921, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 19:57:00,329 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 728 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:00,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 862 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:57:00,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-11-25 19:57:00,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 539. [2021-11-25 19:57:00,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 464 states have (on average 1.4870689655172413) internal successors, (690), 502 states have internal predecessors, (690), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 22 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-25 19:57:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 748 transitions. [2021-11-25 19:57:00,346 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 748 transitions. Word has length 33 [2021-11-25 19:57:00,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:00,346 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 748 transitions. [2021-11-25 19:57:00,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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) [2021-11-25 19:57:00,347 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 748 transitions. [2021-11-25 19:57:00,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 19:57:00,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:00,347 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:00,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-25 19:57:00,348 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:57:00,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:00,348 INFO L85 PathProgramCache]: Analyzing trace with hash -132836009, now seen corresponding path program 1 times [2021-11-25 19:57:00,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:00,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940692957] [2021-11-25 19:57:00,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:00,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:57:01,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:01,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940692957] [2021-11-25 19:57:01,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940692957] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:01,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167481842] [2021-11-25 19:57:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:01,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:01,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:57:01,039 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:57:01,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 19:57:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:01,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-25 19:57:01,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:57:01,326 INFO L388 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 [2021-11-25 19:57:01,530 INFO L388 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 11 [2021-11-25 19:57:01,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:01,746 INFO L388 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 0 case distinctions, treesize of input 60 treesize of output 35 [2021-11-25 19:57:02,007 INFO L354 Elim1Store]: treesize reduction 36, result has 37.9 percent of original size [2021-11-25 19:57:02,008 INFO L388 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 23 treesize of output 33 [2021-11-25 19:57:02,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:02,017 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-25 19:57:02,017 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 19 [2021-11-25 19:57:02,054 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:57:02,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:57:02,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167481842] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:02,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1872955409] [2021-11-25 19:57:02,257 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-25 19:57:02,257 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:57:02,257 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:57:02,257 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:57:02,257 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:57:02,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:02,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:02,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:02,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:02,424 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-11-25 19:57:02,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2021-11-25 19:57:02,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:02,553 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:57:02,554 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:57:02,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:02,603 INFO L354 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2021-11-25 19:57:02,603 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 247 [2021-11-25 19:57:02,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:02,637 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:57:02,637 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:57:02,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:02,755 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:57:02,756 INFO L388 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 5 case distinctions, treesize of input 269 treesize of output 258 [2021-11-25 19:57:02,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:02,784 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:57:02,784 INFO L388 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 1 case distinctions, treesize of input 245 treesize of output 220 [2021-11-25 19:57:02,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:02,847 INFO L354 Elim1Store]: treesize reduction 230, result has 14.5 percent of original size [2021-11-25 19:57:02,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 259 treesize of output 257 [2021-11-25 19:57:02,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:02,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:02,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:02,978 INFO L354 Elim1Store]: treesize reduction 160, result has 12.6 percent of original size [2021-11-25 19:57:02,979 INFO L388 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 7 case distinctions, treesize of input 272 treesize of output 261 [2021-11-25 19:57:03,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,012 INFO L388 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 0 case distinctions, treesize of input 235 treesize of output 229 [2021-11-25 19:57:03,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,102 INFO L354 Elim1Store]: treesize reduction 272, result has 11.1 percent of original size [2021-11-25 19:57:03,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 274 treesize of output 260 [2021-11-25 19:57:03,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,318 INFO L354 Elim1Store]: treesize reduction 208, result has 21.5 percent of original size [2021-11-25 19:57:03,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 268 treesize of output 290 [2021-11-25 19:57:03,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,433 INFO L354 Elim1Store]: treesize reduction 292, result has 11.8 percent of original size [2021-11-25 19:57:03,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 262 treesize of output 252 [2021-11-25 19:57:03,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,483 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-25 19:57:03,483 INFO L388 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 3 case distinctions, treesize of input 246 treesize of output 224 [2021-11-25 19:57:03,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:03,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:03,857 INFO L354 Elim1Store]: treesize reduction 270, result has 8.8 percent of original size [2021-11-25 19:57:03,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 341 treesize of output 313 [2021-11-25 19:57:03,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:03,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:03,929 INFO L354 Elim1Store]: treesize reduction 273, result has 7.8 percent of original size [2021-11-25 19:57:03,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 306 treesize of output 269 [2021-11-25 19:57:03,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:03,952 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:57:03,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 244 treesize of output 222 [2021-11-25 19:57:04,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:04,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:04,206 INFO L354 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2021-11-25 19:57:04,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 209 treesize of output 182 [2021-11-25 19:57:04,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:04,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:04,507 INFO L354 Elim1Store]: treesize reduction 125, result has 8.1 percent of original size [2021-11-25 19:57:04,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 217 treesize of output 184 [2021-11-25 19:57:04,850 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:57:04,851 INFO L388 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 [2021-11-25 19:57:04,890 INFO L388 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 17 treesize of output 19 [2021-11-25 19:57:04,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:57:04,924 INFO L388 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 27 treesize of output 26 [2021-11-25 19:57:04,934 INFO L388 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 27 treesize of output 26 [2021-11-25 19:57:04,971 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:04,971 INFO L388 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 38 treesize of output 48 [2021-11-25 19:57:05,003 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:05,004 INFO L388 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 38 treesize of output 48 [2021-11-25 19:57:05,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:57:05,085 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:05,085 INFO L388 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 61 treesize of output 75 [2021-11-25 19:57:05,141 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:05,141 INFO L388 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 61 treesize of output 75 [2021-11-25 19:57:05,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:57:05,434 INFO L388 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 11 [2021-11-25 19:57:05,445 INFO L388 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 11 [2021-11-25 19:57:05,454 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:05,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:05,548 INFO L354 Elim1Store]: treesize reduction 56, result has 30.0 percent of original size [2021-11-25 19:57:05,548 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 69 [2021-11-25 19:57:05,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:05,569 INFO L354 Elim1Store]: treesize reduction 69, result has 13.8 percent of original size [2021-11-25 19:57:05,569 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 57 [2021-11-25 19:57:05,585 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:06,339 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:57:06,340 INFO L388 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 17 treesize of output 23 [2021-11-25 19:57:06,387 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:57:06,388 INFO L388 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 [2021-11-25 19:57:06,419 INFO L388 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 27 treesize of output 26 [2021-11-25 19:57:06,437 INFO L388 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 27 treesize of output 26 [2021-11-25 19:57:06,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:57:06,500 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:06,501 INFO L388 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 38 treesize of output 48 [2021-11-25 19:57:06,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:57:06,540 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:06,540 INFO L388 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 38 treesize of output 48 [2021-11-25 19:57:06,606 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:06,606 INFO L388 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 61 treesize of output 75 [2021-11-25 19:57:06,667 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:06,667 INFO L388 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 61 treesize of output 75 [2021-11-25 19:57:06,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:57:06,912 INFO L388 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 11 [2021-11-25 19:57:06,923 INFO L388 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 11 [2021-11-25 19:57:06,930 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:07,006 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:07,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:07,046 INFO L354 Elim1Store]: treesize reduction 56, result has 30.0 percent of original size [2021-11-25 19:57:07,047 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 69 [2021-11-25 19:57:07,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:07,069 INFO L354 Elim1Store]: treesize reduction 69, result has 13.8 percent of original size [2021-11-25 19:57:07,069 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 57 [2021-11-25 19:57:07,253 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:57:07,253 INFO L388 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 17 treesize of output 23 [2021-11-25 19:57:07,278 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:57:07,278 INFO L388 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 [2021-11-25 19:57:07,318 INFO L388 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 27 treesize of output 26 [2021-11-25 19:57:07,329 INFO L388 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 27 treesize of output 26 [2021-11-25 19:57:07,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:57:07,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:07,367 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:57:07,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:57:07,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:07,397 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:57:07,406 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2021-11-25 19:57:07,428 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:57:11,646 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34189#(and (<= |~#list~0.base| 3) (<= |ULTIMATE.start_main_#t~ret23#1| 2147483647) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_append_one_#in~to#1| 2147483647) (<= |ULTIMATE.start_create_item_#in~at#1| 2147483647) (<= |ULTIMATE.start_append_one_~to#1| 2147483647) (<= |ULTIMATE.start_append_one_~list#1.base| 3) (<= |ULTIMATE.start_append_one_#in~list#1.offset| 0) (<= 0 |ULTIMATE.start_append_one_~list#1.offset|) (<= |ULTIMATE.start_append_one_~list#1.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_append_one_~to#1|)) (<= 0 |ULTIMATE.start_create_item_~head~0#1.offset|) (or (not (= |ULTIMATE.start_create_item_~link#1.offset| 0)) (not (= |ULTIMATE.start_create_item_~link#1.base| 0))) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_create_item_~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_append_one_#in~to#1| 2147483648)) (<= 0 |ULTIMATE.start_append_one_#in~list#1.offset|) (<= 3 |ULTIMATE.start_append_one_~list#1.base|) (<= 0 |ULTIMATE.start_create_item_~item~0#1.offset|) (<= |#NULL.base| 0) (not (= (select |#valid| |ULTIMATE.start_create_item_~link#1.base|) 1)) (<= 0 (+ |ULTIMATE.start_create_item_~at#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_create_item_#in~at#1| 2147483648)) (<= |ULTIMATE.start_create_item_~item~0#1.offset| 0) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_create_item_~head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_append_one_#in~list#1.base| 3) (<= |~#list~0.offset| 0) (<= 0 (+ |ULTIMATE.start_main_#t~ret23#1| 2147483648)) (<= 3 |ULTIMATE.start_append_one_#in~list#1.base|))' at error location [2021-11-25 19:57:11,647 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:57:11,647 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:57:11,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 31 [2021-11-25 19:57:11,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020770274] [2021-11-25 19:57:11,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:57:11,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-25 19:57:11,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:11,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-25 19:57:11,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=2759, Unknown=0, NotChecked=0, Total=3080 [2021-11-25 19:57:11,649 INFO L87 Difference]: Start difference. First operand 539 states and 748 transitions. Second operand has 32 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:57:17,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:17,224 INFO L93 Difference]: Finished difference Result 1370 states and 1754 transitions. [2021-11-25 19:57:17,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-25 19:57:17,225 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2021-11-25 19:57:17,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:17,231 INFO L225 Difference]: With dead ends: 1370 [2021-11-25 19:57:17,231 INFO L226 Difference]: Without dead ends: 1370 [2021-11-25 19:57:17,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3218 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1786, Invalid=9134, Unknown=0, NotChecked=0, Total=10920 [2021-11-25 19:57:17,239 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1958 mSDsluCounter, 3131 mSDsCounter, 0 mSdLazyCounter, 3411 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1962 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 3752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 3411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:17,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1962 Valid, 3066 Invalid, 3752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 3411 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-25 19:57:17,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2021-11-25 19:57:17,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 553. [2021-11-25 19:57:17,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 478 states have (on average 1.4790794979079498) internal successors, (707), 514 states have internal predecessors, (707), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 24 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-25 19:57:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 765 transitions. [2021-11-25 19:57:17,265 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 765 transitions. Word has length 34 [2021-11-25 19:57:17,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:17,265 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 765 transitions. [2021-11-25 19:57:17,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:57:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 765 transitions. [2021-11-25 19:57:17,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 19:57:17,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:17,266 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:17,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-25 19:57:17,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:17,487 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:57:17,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:17,488 INFO L85 PathProgramCache]: Analyzing trace with hash -132836008, now seen corresponding path program 1 times [2021-11-25 19:57:17,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:17,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617439823] [2021-11-25 19:57:17,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:17,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:57:18,578 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:18,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617439823] [2021-11-25 19:57:18,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617439823] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:18,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374175110] [2021-11-25 19:57:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:18,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:18,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:57:18,583 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:57:18,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 19:57:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:18,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-25 19:57:18,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:57:18,971 INFO L388 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 [2021-11-25 19:57:18,990 INFO L388 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 [2021-11-25 19:57:19,274 INFO L388 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 11 [2021-11-25 19:57:19,278 INFO L388 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 11 [2021-11-25 19:57:19,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:19,653 INFO L388 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 0 case distinctions, treesize of input 73 treesize of output 40 [2021-11-25 19:57:19,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:19,663 INFO L388 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 27 treesize of output 26 [2021-11-25 19:57:20,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:20,084 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-25 19:57:20,084 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 24 [2021-11-25 19:57:20,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:20,098 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-25 19:57:20,098 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 13 [2021-11-25 19:57:20,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:20,105 INFO L388 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 12 treesize of output 14 [2021-11-25 19:57:20,114 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:57:20,114 INFO L388 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 [2021-11-25 19:57:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:57:20,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:57:20,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374175110] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:20,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1758513044] [2021-11-25 19:57:20,973 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-25 19:57:20,973 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:57:20,973 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:57:20,973 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:57:20,973 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:57:21,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:21,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,166 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-11-25 19:57:21,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2021-11-25 19:57:21,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,284 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:57:21,284 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:57:21,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,341 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:57:21,342 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:57:21,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,368 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:57:21,368 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:57:21,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,500 INFO L354 Elim1Store]: treesize reduction 230, result has 14.5 percent of original size [2021-11-25 19:57:21,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2021-11-25 19:57:21,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,532 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:57:21,533 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:57:21,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,604 INFO L354 Elim1Store]: treesize reduction 230, result has 14.5 percent of original size [2021-11-25 19:57:21,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2021-11-25 19:57:21,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,768 INFO L354 Elim1Store]: treesize reduction 272, result has 11.1 percent of original size [2021-11-25 19:57:21,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 286 treesize of output 272 [2021-11-25 19:57:21,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,786 INFO L388 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 0 case distinctions, treesize of input 247 treesize of output 241 [2021-11-25 19:57:21,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:21,850 INFO L354 Elim1Store]: treesize reduction 280, result has 8.5 percent of original size [2021-11-25 19:57:21,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 286 treesize of output 264 [2021-11-25 19:57:22,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:22,074 INFO L354 Elim1Store]: treesize reduction 274, result has 17.2 percent of original size [2021-11-25 19:57:22,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 282 treesize of output 290 [2021-11-25 19:57:22,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:22,158 INFO L354 Elim1Store]: treesize reduction 226, result has 14.7 percent of original size [2021-11-25 19:57:22,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 258 treesize of output 252 [2021-11-25 19:57:22,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:22,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:22,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:22,197 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-25 19:57:22,197 INFO L388 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 3 case distinctions, treesize of input 246 treesize of output 224 [2021-11-25 19:57:22,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:22,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:22,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:22,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:22,562 INFO L354 Elim1Store]: treesize reduction 270, result has 8.8 percent of original size [2021-11-25 19:57:22,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 354 treesize of output 320 [2021-11-25 19:57:22,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:22,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:22,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:22,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:22,653 INFO L354 Elim1Store]: treesize reduction 273, result has 7.8 percent of original size [2021-11-25 19:57:22,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 319 treesize of output 278 [2021-11-25 19:57:22,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:22,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:22,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:22,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:22,676 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:57:22,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 238 treesize of output 216 [2021-11-25 19:57:22,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:22,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:22,949 INFO L354 Elim1Store]: treesize reduction 125, result has 8.1 percent of original size [2021-11-25 19:57:22,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 203 treesize of output 170 [2021-11-25 19:57:23,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:23,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:23,296 INFO L354 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2021-11-25 19:57:23,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 195 treesize of output 168 [2021-11-25 19:57:23,601 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:57:23,601 INFO L388 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 [2021-11-25 19:57:23,611 INFO L388 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 17 treesize of output 19 [2021-11-25 19:57:23,635 INFO L388 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 27 treesize of output 26 [2021-11-25 19:57:23,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:57:23,654 INFO L388 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 27 treesize of output 26 [2021-11-25 19:57:23,710 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:23,710 INFO L388 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 38 treesize of output 48 [2021-11-25 19:57:23,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:57:23,746 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:23,746 INFO L388 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 38 treesize of output 48 [2021-11-25 19:57:23,840 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:23,840 INFO L388 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 61 treesize of output 75 [2021-11-25 19:57:23,921 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:23,922 INFO L388 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 61 treesize of output 75 [2021-11-25 19:57:23,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:57:24,205 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:24,217 INFO L388 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 11 [2021-11-25 19:57:24,223 INFO L388 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 11 [2021-11-25 19:57:24,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:24,345 INFO L354 Elim1Store]: treesize reduction 56, result has 30.0 percent of original size [2021-11-25 19:57:24,345 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 69 [2021-11-25 19:57:24,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:24,367 INFO L354 Elim1Store]: treesize reduction 69, result has 13.8 percent of original size [2021-11-25 19:57:24,368 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 57 [2021-11-25 19:57:24,384 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:25,098 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:57:25,099 INFO L388 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 17 treesize of output 23 [2021-11-25 19:57:25,157 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:57:25,157 INFO L388 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 [2021-11-25 19:57:25,187 INFO L388 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 27 treesize of output 26 [2021-11-25 19:57:25,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:57:25,210 INFO L388 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 27 treesize of output 26 [2021-11-25 19:57:25,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:57:25,267 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:25,267 INFO L388 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 38 treesize of output 48 [2021-11-25 19:57:25,293 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:25,293 INFO L388 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 38 treesize of output 48 [2021-11-25 19:57:25,364 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:25,364 INFO L388 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 61 treesize of output 75 [2021-11-25 19:57:25,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:57:25,444 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:25,444 INFO L388 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 61 treesize of output 75 [2021-11-25 19:57:25,530 INFO L388 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 11 [2021-11-25 19:57:25,538 INFO L388 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 11 [2021-11-25 19:57:25,549 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:25,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:25,661 INFO L354 Elim1Store]: treesize reduction 56, result has 30.0 percent of original size [2021-11-25 19:57:25,661 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 69 [2021-11-25 19:57:25,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:25,682 INFO L354 Elim1Store]: treesize reduction 69, result has 13.8 percent of original size [2021-11-25 19:57:25,684 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 57 [2021-11-25 19:57:25,697 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:25,865 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:57:25,865 INFO L388 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 [2021-11-25 19:57:25,898 INFO L388 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 17 treesize of output 19 [2021-11-25 19:57:25,925 INFO L388 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 27 treesize of output 26 [2021-11-25 19:57:25,934 INFO L388 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 27 treesize of output 26 [2021-11-25 19:57:25,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:57:25,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:25,980 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:57:25,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:57:26,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:26,005 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:57:26,023 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2021-11-25 19:57:26,034 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:57:30,621 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36392#(and (<= |~#list~0.base| 3) (<= |ULTIMATE.start_main_#t~ret23#1| 2147483647) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_append_one_#in~to#1| 2147483647) (<= |ULTIMATE.start_create_item_#in~at#1| 2147483647) (<= |ULTIMATE.start_append_one_~to#1| 2147483647) (<= |ULTIMATE.start_append_one_~list#1.base| 3) (<= |ULTIMATE.start_append_one_#in~list#1.offset| 0) (<= 0 |ULTIMATE.start_append_one_~list#1.offset|) (<= |ULTIMATE.start_append_one_~list#1.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_append_one_~to#1|)) (<= 0 |ULTIMATE.start_create_item_~head~0#1.offset|) (or (not (= |ULTIMATE.start_create_item_~link#1.offset| 0)) (not (= |ULTIMATE.start_create_item_~link#1.base| 0))) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_create_item_~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_append_one_#in~to#1| 2147483648)) (<= 0 |ULTIMATE.start_append_one_#in~list#1.offset|) (<= 3 |ULTIMATE.start_append_one_~list#1.base|) (<= 0 |ULTIMATE.start_create_item_~item~0#1.offset|) (<= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_create_item_~at#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_create_item_#in~at#1| 2147483648)) (<= |ULTIMATE.start_create_item_~item~0#1.offset| 0) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_create_item_~head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_append_one_#in~list#1.base| 3) (<= |~#list~0.offset| 0) (or (< (+ |ULTIMATE.start_create_item_~link#1.offset| (* 4 |ULTIMATE.start_create_item_~term_field~0#1|)) 0) (< (select |#length| |ULTIMATE.start_create_item_~link#1.base|) (+ |ULTIMATE.start_create_item_~link#1.offset| 4 (* 4 |ULTIMATE.start_create_item_~term_field~0#1|)))) (<= 0 (+ |ULTIMATE.start_main_#t~ret23#1| 2147483648)) (<= 3 |ULTIMATE.start_append_one_#in~list#1.base|))' at error location [2021-11-25 19:57:30,621 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:57:30,621 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:57:30,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 33 [2021-11-25 19:57:30,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973949787] [2021-11-25 19:57:30,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:57:30,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-25 19:57:30,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:30,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-25 19:57:30,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=3105, Unknown=0, NotChecked=0, Total=3422 [2021-11-25 19:57:30,622 INFO L87 Difference]: Start difference. First operand 553 states and 765 transitions. Second operand has 34 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:57:44,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:44,145 INFO L93 Difference]: Finished difference Result 1682 states and 2146 transitions. [2021-11-25 19:57:44,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-25 19:57:44,145 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2021-11-25 19:57:44,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:44,153 INFO L225 Difference]: With dead ends: 1682 [2021-11-25 19:57:44,153 INFO L226 Difference]: Without dead ends: 1682 [2021-11-25 19:57:44,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5096 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=2313, Invalid=14199, Unknown=0, NotChecked=0, Total=16512 [2021-11-25 19:57:44,155 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 2808 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 3878 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2810 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 4398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 3878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:44,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2810 Valid, 2286 Invalid, 4398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 3878 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-25 19:57:44,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2021-11-25 19:57:44,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 560. [2021-11-25 19:57:44,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 485 states have (on average 1.4742268041237114) internal successors, (715), 520 states have internal predecessors, (715), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-25 19:57:44,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 773 transitions. [2021-11-25 19:57:44,175 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 773 transitions. Word has length 34 [2021-11-25 19:57:44,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:44,175 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 773 transitions. [2021-11-25 19:57:44,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 19:57:44,176 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 773 transitions. [2021-11-25 19:57:44,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 19:57:44,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:44,177 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:44,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:57:44,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-11-25 19:57:44,391 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:57:44,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:44,392 INFO L85 PathProgramCache]: Analyzing trace with hash 198722594, now seen corresponding path program 1 times [2021-11-25 19:57:44,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:44,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480278495] [2021-11-25 19:57:44,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:44,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:45,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:57:45,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:45,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480278495] [2021-11-25 19:57:45,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480278495] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:45,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970204528] [2021-11-25 19:57:45,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:45,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:45,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:57:45,022 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:57:45,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 19:57:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:45,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-25 19:57:45,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:57:45,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:45,347 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:57:45,347 INFO L388 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 26 [2021-11-25 19:57:45,374 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:57:45,374 INFO L388 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 [2021-11-25 19:57:45,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 19:57:45,909 INFO L354 Elim1Store]: treesize reduction 44, result has 31.3 percent of original size [2021-11-25 19:57:45,910 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 45 [2021-11-25 19:57:46,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,250 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-25 19:57:46,251 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 21 [2021-11-25 19:57:46,272 INFO L388 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 24 treesize of output 18 [2021-11-25 19:57:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:57:46,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:57:46,754 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:57:46,754 INFO L388 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 149 treesize of output 153 [2021-11-25 19:57:46,763 INFO L388 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 40 treesize of output 34 [2021-11-25 19:57:46,792 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:57:46,793 INFO L388 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 124 treesize of output 128 [2021-11-25 19:57:49,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970204528] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:49,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1667655340] [2021-11-25 19:57:49,365 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2021-11-25 19:57:49,366 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:57:49,366 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:57:49,366 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:57:49,366 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:57:49,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:49,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:49,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:49,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:49,566 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-11-25 19:57:49,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2021-11-25 19:57:49,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:49,718 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:57:49,719 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:57:49,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:49,781 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:57:49,781 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:57:49,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:49,812 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:57:49,812 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:57:49,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:49,988 INFO L354 Elim1Store]: treesize reduction 230, result has 14.5 percent of original size [2021-11-25 19:57:49,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2021-11-25 19:57:50,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,057 INFO L354 Elim1Store]: treesize reduction 238, result has 11.5 percent of original size [2021-11-25 19:57:50,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 261 [2021-11-25 19:57:50,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,087 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:57:50,087 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:57:50,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,208 INFO L354 Elim1Store]: treesize reduction 160, result has 12.6 percent of original size [2021-11-25 19:57:50,209 INFO L388 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 7 case distinctions, treesize of input 284 treesize of output 261 [2021-11-25 19:57:50,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,278 INFO L354 Elim1Store]: treesize reduction 280, result has 8.5 percent of original size [2021-11-25 19:57:50,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 286 treesize of output 264 [2021-11-25 19:57:50,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,294 INFO L388 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 0 case distinctions, treesize of input 235 treesize of output 229 [2021-11-25 19:57:50,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,511 INFO L354 Elim1Store]: treesize reduction 226, result has 14.7 percent of original size [2021-11-25 19:57:50,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 268 treesize of output 260 [2021-11-25 19:57:50,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,545 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-25 19:57:50,545 INFO L388 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 3 case distinctions, treesize of input 242 treesize of output 220 [2021-11-25 19:57:50,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,616 INFO L354 Elim1Store]: treesize reduction 208, result has 21.5 percent of original size [2021-11-25 19:57:50,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 256 treesize of output 278 [2021-11-25 19:57:50,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:50,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,940 INFO L354 Elim1Store]: treesize reduction 258, result has 9.2 percent of original size [2021-11-25 19:57:50,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 304 treesize of output 284 [2021-11-25 19:57:50,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:50,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:50,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 243 [2021-11-25 19:57:50,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:50,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:51,003 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:57:51,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 214 treesize of output 192 [2021-11-25 19:57:51,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:51,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:51,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:51,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:51,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:51,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2021-11-25 19:57:51,451 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:57:51,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:51,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:51,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:51,556 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-25 19:57:51,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 185 treesize of output 163 [2021-11-25 19:57:51,902 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:57:51,902 INFO L388 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 [2021-11-25 19:57:51,934 INFO L388 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 17 treesize of output 19 [2021-11-25 19:57:51,960 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:51,966 INFO L388 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 11 [2021-11-25 19:57:51,972 INFO L388 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 11 [2021-11-25 19:57:51,998 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:51,998 INFO L388 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 27 treesize of output 34 [2021-11-25 19:57:52,018 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:52,018 INFO L388 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 27 treesize of output 34 [2021-11-25 19:57:52,026 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:52,081 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:52,081 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:57:52,134 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:52,134 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:57:52,151 INFO L388 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 13 treesize of output 9 [2021-11-25 19:57:52,318 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:52,385 INFO L388 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 11 [2021-11-25 19:57:52,394 INFO L388 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 11 [2021-11-25 19:57:52,542 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:57:52,542 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:57:52,552 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:52,641 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:57:52,642 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:57:54,024 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:57:54,024 INFO L388 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 17 treesize of output 23 [2021-11-25 19:57:54,071 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:57:54,072 INFO L388 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 [2021-11-25 19:57:54,090 INFO L388 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 11 [2021-11-25 19:57:54,097 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:54,103 INFO L388 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 11 [2021-11-25 19:57:54,132 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:54,132 INFO L388 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 27 treesize of output 34 [2021-11-25 19:57:54,141 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:54,161 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:54,161 INFO L388 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 27 treesize of output 34 [2021-11-25 19:57:54,179 INFO L388 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 13 treesize of output 9 [2021-11-25 19:57:54,216 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:54,216 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:57:54,264 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:54,264 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:57:54,382 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:54,439 INFO L388 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 11 [2021-11-25 19:57:54,447 INFO L388 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 11 [2021-11-25 19:57:54,592 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:57:54,592 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:57:54,613 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:57:54,613 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:57:54,622 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:54,946 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:57:54,946 INFO L388 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 [2021-11-25 19:57:54,978 INFO L388 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 17 treesize of output 19 [2021-11-25 19:57:55,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:57:55,012 INFO L388 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 27 treesize of output 26 [2021-11-25 19:57:55,020 INFO L388 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 27 treesize of output 26 [2021-11-25 19:57:55,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:55,057 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:57:55,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:55,073 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:57:55,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:57:55,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:55,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:55,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:55,118 INFO L388 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 0 case distinctions, treesize of input 53 treesize of output 43 [2021-11-25 19:57:55,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:57:55,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:55,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:55,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:55,149 INFO L388 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 0 case distinctions, treesize of input 53 treesize of output 43 [2021-11-25 19:57:55,211 INFO L388 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 33 treesize of output 13 [2021-11-25 19:57:55,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:55,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2021-11-25 19:57:55,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:55,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2021-11-25 19:57:55,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:55,339 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:57:55,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 57 [2021-11-25 19:57:55,359 INFO L388 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 33 treesize of output 13 [2021-11-25 19:57:55,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:55,387 INFO L354 Elim1Store]: treesize reduction 44, result has 31.3 percent of original size [2021-11-25 19:57:55,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 65 [2021-11-25 19:57:55,909 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:57:55,909 INFO L388 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 17 treesize of output 23 [2021-11-25 19:57:55,934 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:57:55,934 INFO L388 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 [2021-11-25 19:57:55,964 INFO L388 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 11 [2021-11-25 19:57:55,973 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:55,979 INFO L388 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 11 [2021-11-25 19:57:55,998 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:56,015 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:56,016 INFO L388 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 27 treesize of output 34 [2021-11-25 19:57:56,035 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:56,036 INFO L388 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 27 treesize of output 34 [2021-11-25 19:57:56,059 INFO L388 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 13 treesize of output 9 [2021-11-25 19:57:56,102 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:56,102 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:57:56,152 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:56,152 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:57:56,246 INFO L354 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2021-11-25 19:57:56,246 INFO L388 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 27 [2021-11-25 19:57:56,305 INFO L354 Elim1Store]: treesize reduction 60, result has 52.8 percent of original size [2021-11-25 19:57:56,306 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2021-11-25 19:57:56,426 INFO L354 Elim1Store]: treesize reduction 60, result has 52.8 percent of original size [2021-11-25 19:57:56,426 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2021-11-25 19:57:57,781 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:57,791 INFO L388 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 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:57:57,931 INFO L388 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 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:57:59,013 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:57:59,013 INFO L388 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 17 treesize of output 23 [2021-11-25 19:57:59,062 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:57:59,062 INFO L388 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 [2021-11-25 19:57:59,081 INFO L388 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 11 [2021-11-25 19:57:59,088 INFO L388 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 11 [2021-11-25 19:57:59,094 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:59,113 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:59,132 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:59,132 INFO L388 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 27 treesize of output 34 [2021-11-25 19:57:59,152 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:57:59,152 INFO L388 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 27 treesize of output 34 [2021-11-25 19:57:59,177 INFO L388 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 13 treesize of output 9 [2021-11-25 19:57:59,215 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:59,215 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:57:59,264 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:57:59,265 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:57:59,396 INFO L388 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 11 [2021-11-25 19:57:59,403 INFO L388 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 11 [2021-11-25 19:57:59,458 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:59,586 INFO L388 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 23 treesize of output 1 [2021-11-25 19:57:59,612 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:57:59,612 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:57:59,680 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:57:59,680 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:57:59,991 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:57:59,991 INFO L388 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 17 treesize of output 23 [2021-11-25 19:58:00,016 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:58:00,017 INFO L388 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 [2021-11-25 19:58:00,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:58:00,069 INFO L388 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 27 treesize of output 26 [2021-11-25 19:58:00,080 INFO L388 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 27 treesize of output 26 [2021-11-25 19:58:00,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:58:00,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:00,132 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:58:00,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:00,143 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:58:00,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:00,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:00,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:00,177 INFO L388 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 0 case distinctions, treesize of input 53 treesize of output 43 [2021-11-25 19:58:00,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:00,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:00,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:00,190 INFO L388 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 0 case distinctions, treesize of input 53 treesize of output 43 [2021-11-25 19:58:00,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:58:00,269 INFO L388 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 33 treesize of output 13 [2021-11-25 19:58:00,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:00,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2021-11-25 19:58:00,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:00,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2021-11-25 19:58:00,375 INFO L388 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 33 treesize of output 13 [2021-11-25 19:58:00,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:00,413 INFO L354 Elim1Store]: treesize reduction 44, result has 31.3 percent of original size [2021-11-25 19:58:00,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 65 [2021-11-25 19:58:00,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:00,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:00,429 INFO L388 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 0 case distinctions, treesize of input 60 treesize of output 57 [2021-11-25 19:58:00,922 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:58:00,923 INFO L388 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 17 treesize of output 23 [2021-11-25 19:58:00,949 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:58:00,949 INFO L388 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 [2021-11-25 19:58:00,980 INFO L388 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 11 [2021-11-25 19:58:00,987 INFO L388 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 11 [2021-11-25 19:58:00,994 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:01,024 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:01,025 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:01,049 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:01,049 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:01,060 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:01,115 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:01,115 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:01,132 INFO L388 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 13 treesize of output 9 [2021-11-25 19:58:01,175 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:01,175 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:01,292 INFO L388 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 11 [2021-11-25 19:58:01,345 INFO L388 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 11 [2021-11-25 19:58:01,353 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:01,492 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:58:01,493 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:58:01,502 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:01,619 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:58:01,619 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:58:03,161 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:58:03,161 INFO L388 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 17 treesize of output 23 [2021-11-25 19:58:03,188 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:58:03,188 INFO L388 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 [2021-11-25 19:58:03,208 INFO L388 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 11 [2021-11-25 19:58:03,215 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:03,223 INFO L388 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 11 [2021-11-25 19:58:03,254 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:03,254 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:03,264 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:03,284 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:03,284 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:03,343 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:03,344 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:03,360 INFO L388 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 13 treesize of output 9 [2021-11-25 19:58:03,401 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:03,401 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:03,570 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:03,579 INFO L388 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 11 [2021-11-25 19:58:03,586 INFO L388 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 11 [2021-11-25 19:58:03,721 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:03,739 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:58:03,740 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:58:03,818 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:58:03,818 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:58:04,223 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2021-11-25 19:58:04,232 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:58:09,986 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '39011#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (= (select |#valid| |~#list~0.base|) 1) (= (select (select |#memory_$Pointer$.offset| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.offset|) (<= (+ (* 4 |ULTIMATE.start_main_~end_point~0#1|) |~#list~0.offset| 4) (select |#length| |~#list~0.base|)) (<= |#NULL.offset| 0) (= 0 |ULTIMATE.start_main_~cursor~0#1.offset|) (<= |#StackHeapBarrier| |ULTIMATE.start_main_~cursor~0#1.base|) (or (and (= ~unnamed2~0~ITEM_NEXT |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_~end_point~0#1|)) (and (= ~unnamed2~0~ITEM_PREV |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_~end_point~0#1|))) (= |ULTIMATE.start_main_~next~1#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~cursor~0#1.base|) (+ (* |ULTIMATE.start_main_~direction~0#1| 4) |ULTIMATE.start_main_~cursor~0#1.offset|))) (= (select |#valid| |ULTIMATE.start_main_~cursor~0#1.base|) 1) (<= (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) 4 |ULTIMATE.start_main_~cursor~0#1.offset|) (select |#length| |ULTIMATE.start_main_~cursor~0#1.base|)) (<= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~cursor~0#1.base|) (+ (* |ULTIMATE.start_main_~direction~0#1| 4) |ULTIMATE.start_main_~cursor~0#1.offset|)) |ULTIMATE.start_main_~next~1#1.base|) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.base|) (not (= |ULTIMATE.start_main_~cursor~0#1.base| 0)) (<= |~#list~0.offset| 0))' at error location [2021-11-25 19:58:09,986 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:58:09,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:58:09,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2021-11-25 19:58:09,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238685555] [2021-11-25 19:58:09,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:58:09,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 19:58:09,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:09,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 19:58:09,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3203, Unknown=0, NotChecked=0, Total=3422 [2021-11-25 19:58:09,988 INFO L87 Difference]: Start difference. First operand 560 states and 773 transitions. Second operand has 24 states, 23 states have (on average 2.782608695652174) internal successors, (64), 24 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:58:11,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:11,191 INFO L93 Difference]: Finished difference Result 568 states and 782 transitions. [2021-11-25 19:58:11,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:58:11,192 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.782608695652174) internal successors, (64), 24 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-11-25 19:58:11,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:11,194 INFO L225 Difference]: With dead ends: 568 [2021-11-25 19:58:11,194 INFO L226 Difference]: Without dead ends: 568 [2021-11-25 19:58:11,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=331, Invalid=4225, Unknown=0, NotChecked=0, Total=4556 [2021-11-25 19:58:11,195 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 59 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:11,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 1051 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 642 Invalid, 0 Unknown, 199 Unchecked, 0.4s Time] [2021-11-25 19:58:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-11-25 19:58:11,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 566. [2021-11-25 19:58:11,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 491 states have (on average 1.4684317718940938) internal successors, (721), 526 states have internal predecessors, (721), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-25 19:58:11,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 779 transitions. [2021-11-25 19:58:11,207 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 779 transitions. Word has length 34 [2021-11-25 19:58:11,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:11,207 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 779 transitions. [2021-11-25 19:58:11,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.782608695652174) internal successors, (64), 24 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:58:11,208 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 779 transitions. [2021-11-25 19:58:11,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 19:58:11,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:11,209 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:58:11,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-25 19:58:11,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:11,431 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:58:11,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:11,432 INFO L85 PathProgramCache]: Analyzing trace with hash -844574974, now seen corresponding path program 1 times [2021-11-25 19:58:11,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:11,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189723054] [2021-11-25 19:58:11,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:11,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:58:12,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:12,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189723054] [2021-11-25 19:58:12,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189723054] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:58:12,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038685886] [2021-11-25 19:58:12,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:12,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:12,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:58:12,369 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:58:12,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 19:58:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:12,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-25 19:58:12,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:58:12,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:12,705 INFO L388 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 16 treesize of output 12 [2021-11-25 19:58:12,870 INFO L388 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 11 [2021-11-25 19:58:13,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:13,036 INFO L388 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 0 case distinctions, treesize of input 39 treesize of output 26 [2021-11-25 19:58:13,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:13,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:13,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:13,274 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:58:13,274 INFO L388 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 138 treesize of output 130 [2021-11-25 19:58:13,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:13,279 INFO L388 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 0 case distinctions, treesize of input 81 treesize of output 49 [2021-11-25 19:58:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:58:13,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:58:13,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:13,632 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:58:13,633 INFO L388 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 99 treesize of output 75 [2021-11-25 19:58:14,011 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:58:14,011 INFO L388 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 243 treesize of output 245 [2021-11-25 19:58:14,029 INFO L388 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 40 treesize of output 34 [2021-11-25 19:58:14,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:14,057 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:58:14,058 INFO L388 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 2 case distinctions, treesize of input 275 treesize of output 289 [2021-11-25 19:58:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:58:15,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038685886] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:58:15,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [154510168] [2021-11-25 19:58:15,005 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2021-11-25 19:58:15,005 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:58:15,005 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:58:15,006 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:58:15,006 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:58:15,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:15,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:15,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:15,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:15,190 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-11-25 19:58:15,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2021-11-25 19:58:15,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:15,381 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:58:15,381 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:58:15,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:15,445 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:58:15,446 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:58:15,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:15,482 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:58:15,482 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:58:15,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:15,676 INFO L354 Elim1Store]: treesize reduction 230, result has 14.5 percent of original size [2021-11-25 19:58:15,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2021-11-25 19:58:15,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:15,725 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:58:15,725 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:58:15,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:15,804 INFO L354 Elim1Store]: treesize reduction 230, result has 14.5 percent of original size [2021-11-25 19:58:15,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2021-11-25 19:58:15,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:15,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:15,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:15,950 INFO L354 Elim1Store]: treesize reduction 280, result has 8.5 percent of original size [2021-11-25 19:58:15,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 286 treesize of output 264 [2021-11-25 19:58:15,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:15,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:15,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:16,039 INFO L354 Elim1Store]: treesize reduction 272, result has 11.1 percent of original size [2021-11-25 19:58:16,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 286 treesize of output 272 [2021-11-25 19:58:16,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:16,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:16,052 INFO L388 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 0 case distinctions, treesize of input 247 treesize of output 241 [2021-11-25 19:58:16,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:16,257 INFO L354 Elim1Store]: treesize reduction 226, result has 14.7 percent of original size [2021-11-25 19:58:16,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 278 treesize of output 272 [2021-11-25 19:58:16,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:16,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:16,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:16,290 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-25 19:58:16,291 INFO L388 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 3 case distinctions, treesize of input 266 treesize of output 244 [2021-11-25 19:58:16,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:16,377 INFO L354 Elim1Store]: treesize reduction 274, result has 17.2 percent of original size [2021-11-25 19:58:16,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 282 treesize of output 290 [2021-11-25 19:58:16,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:16,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:16,659 INFO L354 Elim1Store]: treesize reduction 242, result has 14.8 percent of original size [2021-11-25 19:58:16,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 329 treesize of output 319 [2021-11-25 19:58:16,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:16,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:16,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:16,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:16,686 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:58:16,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 272 treesize of output 250 [2021-11-25 19:58:16,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:16,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:16,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:16,740 INFO L354 Elim1Store]: treesize reduction 210, result has 9.9 percent of original size [2021-11-25 19:58:16,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 306 treesize of output 284 [2021-11-25 19:58:17,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:17,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:17,089 INFO L354 Elim1Store]: treesize reduction 143, result has 7.1 percent of original size [2021-11-25 19:58:17,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 249 treesize of output 210 [2021-11-25 19:58:17,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:17,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:17,434 INFO L354 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2021-11-25 19:58:17,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 233 treesize of output 206 [2021-11-25 19:58:17,785 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:58:17,785 INFO L388 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 17 treesize of output 23 [2021-11-25 19:58:17,809 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:58:17,809 INFO L388 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 [2021-11-25 19:58:17,839 INFO L388 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 11 [2021-11-25 19:58:17,845 INFO L388 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 11 [2021-11-25 19:58:17,853 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:17,887 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:17,887 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:17,895 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:17,912 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:17,913 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:17,936 INFO L388 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 13 treesize of output 9 [2021-11-25 19:58:17,970 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:17,970 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:18,018 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:18,018 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:18,166 INFO L388 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 11 [2021-11-25 19:58:18,174 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:18,228 INFO L388 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 11 [2021-11-25 19:58:18,370 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:58:18,370 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:58:18,409 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:58:18,410 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:58:18,473 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:19,904 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:58:19,904 INFO L388 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 [2021-11-25 19:58:19,915 INFO L388 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 17 treesize of output 19 [2021-11-25 19:58:19,946 INFO L388 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 11 [2021-11-25 19:58:19,953 INFO L388 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 11 [2021-11-25 19:58:19,960 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:19,994 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:19,994 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:20,016 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:20,017 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:20,026 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:20,094 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:20,095 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:20,145 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:20,145 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:20,160 INFO L388 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 13 treesize of output 9 [2021-11-25 19:58:20,345 INFO L388 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 11 [2021-11-25 19:58:20,352 INFO L388 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 11 [2021-11-25 19:58:20,360 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:20,553 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:20,578 INFO L354 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2021-11-25 19:58:20,579 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2021-11-25 19:58:20,602 INFO L354 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2021-11-25 19:58:20,602 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 19:58:21,047 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2021-11-25 19:58:21,058 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:58:27,630 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40441#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (= |ULTIMATE.start_is_empty_~no_beg~0#1| (ite (and (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_is_empty_~list#1.base|) (+ |ULTIMATE.start_is_empty_~list#1.offset| (* ~unnamed1~0~LIST_BEG 4))) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_is_empty_~list#1.base|) (+ |ULTIMATE.start_is_empty_~list#1.offset| (* ~unnamed1~0~LIST_BEG 4))) 0)) 1 0)) (= |ULTIMATE.start_is_empty_~list#1.base| |ULTIMATE.start_is_empty_#in~list#1.base|) (= |ULTIMATE.start_remove_one_#in~list#1.base| |ULTIMATE.start_remove_one_~list#1.base|) (= |ULTIMATE.start_is_empty_~no_end~0#1| (ite (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_is_empty_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset|)) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_is_empty_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset|)) 0)) 1 0)) (= |ULTIMATE.start_remove_one_#in~from#1| |ULTIMATE.start_main_#t~ret25#1|) (= |ULTIMATE.start_remove_one_#in~from#1| |ULTIMATE.start_remove_one_~from#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_remove_one_#in~list#1.base| |~#list~0.base|) (<= |#NULL.base| 0) (= |~#list~0.offset| |ULTIMATE.start_remove_one_#in~list#1.offset|) (= |ULTIMATE.start_is_empty_~list#1.offset| |ULTIMATE.start_is_empty_#in~list#1.offset|) (= |ULTIMATE.start_is_empty_~list#1.offset| 0) (or (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_#t~ret25#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_#t~ret25#1|)) (<= 0 |~#list~0.offset|) (<= (+ (* 4 ~unnamed1~0~LIST_END) |ULTIMATE.start_is_empty_~list#1.offset| 4) (select |#length| |ULTIMATE.start_is_empty_~list#1.base|)) (= |ULTIMATE.start_is_empty_#in~list#1.base| |ULTIMATE.start_remove_one_~list#1.base|) (<= 3 |~#list~0.base|) (= (select |#valid| |ULTIMATE.start_is_empty_~list#1.base|) 1) (<= 0 |#NULL.offset|) (<= |#StackHeapBarrier| |ULTIMATE.start_is_empty_~list#1.base|) (not (= |ULTIMATE.start_is_empty_~no_end~0#1| |ULTIMATE.start_is_empty_~no_beg~0#1|)) (= |ULTIMATE.start_remove_one_~list#1.offset| |ULTIMATE.start_remove_one_#in~list#1.offset|) (<= 0 |#StackHeapBarrier|) (<= |~#list~0.offset| 0))' at error location [2021-11-25 19:58:27,630 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:58:27,630 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:58:27,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 47 [2021-11-25 19:58:27,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407607126] [2021-11-25 19:58:27,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:58:27,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-25 19:58:27,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:27,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-25 19:58:27,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=4885, Unknown=0, NotChecked=0, Total=5256 [2021-11-25 19:58:27,632 INFO L87 Difference]: Start difference. First operand 566 states and 779 transitions. Second operand has 47 states, 44 states have (on average 2.022727272727273) internal successors, (89), 44 states have internal predecessors, (89), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-25 19:58:38,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:38,480 INFO L93 Difference]: Finished difference Result 1578 states and 2042 transitions. [2021-11-25 19:58:38,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-25 19:58:38,480 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 2.022727272727273) internal successors, (89), 44 states have internal predecessors, (89), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 35 [2021-11-25 19:58:38,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:38,487 INFO L225 Difference]: With dead ends: 1578 [2021-11-25 19:58:38,488 INFO L226 Difference]: Without dead ends: 1575 [2021-11-25 19:58:38,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4585 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=2281, Invalid=13975, Unknown=0, NotChecked=0, Total=16256 [2021-11-25 19:58:38,490 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 4233 mSDsluCounter, 2570 mSDsCounter, 0 mSdLazyCounter, 2638 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4235 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 3193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 2638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:38,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4235 Valid, 2435 Invalid, 3193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 2638 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 19:58:38,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2021-11-25 19:58:38,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 548. [2021-11-25 19:58:38,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 473 states have (on average 1.4439746300211416) internal successors, (683), 508 states have internal predecessors, (683), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-25 19:58:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 741 transitions. [2021-11-25 19:58:38,513 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 741 transitions. Word has length 35 [2021-11-25 19:58:38,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:38,514 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 741 transitions. [2021-11-25 19:58:38,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 2.022727272727273) internal successors, (89), 44 states have internal predecessors, (89), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-25 19:58:38,514 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 741 transitions. [2021-11-25 19:58:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 19:58:38,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:38,515 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:58:38,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:58:38,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:38,731 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:58:38,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:38,732 INFO L85 PathProgramCache]: Analyzing trace with hash 577157674, now seen corresponding path program 1 times [2021-11-25 19:58:38,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:38,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905788306] [2021-11-25 19:58:38,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:38,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:39,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:58:39,293 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:39,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905788306] [2021-11-25 19:58:39,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905788306] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:58:39,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566212622] [2021-11-25 19:58:39,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:39,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:39,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:58:39,294 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:58:39,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 19:58:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:39,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-25 19:58:39,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:58:39,677 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:58:39,677 INFO L388 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 [2021-11-25 19:58:39,685 INFO L388 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 12 treesize of output 14 [2021-11-25 19:58:39,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 19:58:40,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:40,262 INFO L388 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 0 case distinctions, treesize of input 70 treesize of output 37 [2021-11-25 19:58:40,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:40,489 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-25 19:58:40,490 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 21 [2021-11-25 19:58:40,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:58:40,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:58:40,952 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:58:40,952 INFO L388 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 149 treesize of output 153 [2021-11-25 19:58:40,966 INFO L388 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 40 treesize of output 34 [2021-11-25 19:58:41,002 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:58:41,003 INFO L388 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 124 treesize of output 128 [2021-11-25 19:58:44,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566212622] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:58:44,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1087342647] [2021-11-25 19:58:44,218 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2021-11-25 19:58:44,219 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:58:44,219 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:58:44,219 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:58:44,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:58:44,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:44,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,407 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-11-25 19:58:44,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2021-11-25 19:58:44,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,578 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:58:44,578 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:58:44,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,605 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:58:44,605 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:58:44,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,650 INFO L354 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2021-11-25 19:58:44,650 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 247 [2021-11-25 19:58:44,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,782 INFO L354 Elim1Store]: treesize reduction 238, result has 11.5 percent of original size [2021-11-25 19:58:44,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 261 [2021-11-25 19:58:44,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,833 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:58:44,834 INFO L388 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 5 case distinctions, treesize of input 269 treesize of output 258 [2021-11-25 19:58:44,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,858 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:58:44,858 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:58:44,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,986 INFO L354 Elim1Store]: treesize reduction 160, result has 12.6 percent of original size [2021-11-25 19:58:44,986 INFO L388 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 7 case distinctions, treesize of input 284 treesize of output 261 [2021-11-25 19:58:45,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,043 INFO L354 Elim1Store]: treesize reduction 160, result has 12.6 percent of original size [2021-11-25 19:58:45,044 INFO L388 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 7 case distinctions, treesize of input 284 treesize of output 261 [2021-11-25 19:58:45,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,058 INFO L388 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 0 case distinctions, treesize of input 235 treesize of output 229 [2021-11-25 19:58:45,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,281 INFO L354 Elim1Store]: treesize reduction 226, result has 14.7 percent of original size [2021-11-25 19:58:45,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 280 treesize of output 272 [2021-11-25 19:58:45,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,360 INFO L354 Elim1Store]: treesize reduction 208, result has 21.5 percent of original size [2021-11-25 19:58:45,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 268 treesize of output 278 [2021-11-25 19:58:45,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,392 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-25 19:58:45,392 INFO L388 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 3 case distinctions, treesize of input 234 treesize of output 212 [2021-11-25 19:58:45,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:45,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:45,751 INFO L354 Elim1Store]: treesize reduction 262, result has 11.5 percent of original size [2021-11-25 19:58:45,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 329 treesize of output 309 [2021-11-25 19:58:45,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,784 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:58:45,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 258 treesize of output 236 [2021-11-25 19:58:45,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:45,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:45,848 INFO L354 Elim1Store]: treesize reduction 273, result has 7.8 percent of original size [2021-11-25 19:58:45,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 315 treesize of output 284 [2021-11-25 19:58:46,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:46,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:46,116 INFO L354 Elim1Store]: treesize reduction 143, result has 7.1 percent of original size [2021-11-25 19:58:46,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 241 treesize of output 202 [2021-11-25 19:58:46,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:46,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:46,467 INFO L354 Elim1Store]: treesize reduction 125, result has 8.1 percent of original size [2021-11-25 19:58:46,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 233 treesize of output 200 [2021-11-25 19:58:46,802 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:58:46,802 INFO L388 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 [2021-11-25 19:58:46,813 INFO L388 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 17 treesize of output 19 [2021-11-25 19:58:46,836 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:46,844 INFO L388 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 11 [2021-11-25 19:58:46,851 INFO L388 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 11 [2021-11-25 19:58:46,871 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:46,891 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:46,891 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:46,913 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:46,914 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:46,967 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:46,968 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:47,015 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:47,015 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:47,033 INFO L388 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 13 treesize of output 9 [2021-11-25 19:58:47,199 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:47,207 INFO L388 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 11 [2021-11-25 19:58:47,215 INFO L388 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 11 [2021-11-25 19:58:47,510 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:47,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:47,536 INFO L354 Elim1Store]: treesize reduction 69, result has 13.8 percent of original size [2021-11-25 19:58:47,536 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 57 [2021-11-25 19:58:47,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:47,569 INFO L354 Elim1Store]: treesize reduction 56, result has 30.0 percent of original size [2021-11-25 19:58:47,569 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 69 [2021-11-25 19:58:48,964 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:58:48,965 INFO L388 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 17 treesize of output 23 [2021-11-25 19:58:48,997 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:58:48,998 INFO L388 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 [2021-11-25 19:58:49,016 INFO L388 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 11 [2021-11-25 19:58:49,022 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:49,030 INFO L388 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 11 [2021-11-25 19:58:49,049 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:49,073 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:49,073 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:49,099 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:49,099 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:49,158 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:49,158 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:49,175 INFO L388 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 13 treesize of output 9 [2021-11-25 19:58:49,211 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:49,212 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:49,302 INFO L354 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2021-11-25 19:58:49,307 INFO L388 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 27 [2021-11-25 19:58:49,399 INFO L354 Elim1Store]: treesize reduction 60, result has 52.8 percent of original size [2021-11-25 19:58:49,400 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2021-11-25 19:58:49,538 INFO L354 Elim1Store]: treesize reduction 60, result has 52.8 percent of original size [2021-11-25 19:58:49,538 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2021-11-25 19:58:55,215 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:55,225 INFO L388 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 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:58:55,235 INFO L388 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 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 19:58:55,692 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:58:55,692 INFO L388 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 17 treesize of output 23 [2021-11-25 19:58:55,723 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:58:55,723 INFO L388 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 [2021-11-25 19:58:55,756 INFO L388 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 27 treesize of output 26 [2021-11-25 19:58:55,766 INFO L388 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 27 treesize of output 26 [2021-11-25 19:58:55,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:58:55,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:55,813 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:58:55,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:58:55,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:55,854 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:58:55,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:55,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:55,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:55,888 INFO L388 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 0 case distinctions, treesize of input 53 treesize of output 43 [2021-11-25 19:58:55,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:55,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:55,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:55,905 INFO L388 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 0 case distinctions, treesize of input 53 treesize of output 43 [2021-11-25 19:58:55,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:58:56,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:56,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2021-11-25 19:58:56,024 INFO L388 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 33 treesize of output 13 [2021-11-25 19:58:56,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:56,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2021-11-25 19:58:56,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:56,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:56,172 INFO L354 Elim1Store]: treesize reduction 60, result has 25.0 percent of original size [2021-11-25 19:58:56,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 93 [2021-11-25 19:58:56,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:56,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:56,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:58:56,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:56,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-11-25 19:58:56,221 INFO L388 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 33 treesize of output 13 [2021-11-25 19:58:56,657 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:58:56,657 INFO L388 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 [2021-11-25 19:58:56,667 INFO L388 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 17 treesize of output 19 [2021-11-25 19:58:56,700 INFO L388 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 11 [2021-11-25 19:58:56,722 INFO L388 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 11 [2021-11-25 19:58:56,735 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:56,767 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:56,768 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:56,792 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:56,792 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:56,800 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:56,850 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:56,851 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:56,867 INFO L388 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 13 treesize of output 9 [2021-11-25 19:58:56,910 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:56,910 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:57,045 INFO L388 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 11 [2021-11-25 19:58:57,119 INFO L388 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 11 [2021-11-25 19:58:57,127 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:57,349 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:57,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:57,382 INFO L354 Elim1Store]: treesize reduction 56, result has 30.0 percent of original size [2021-11-25 19:58:57,382 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 69 [2021-11-25 19:58:57,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:57,408 INFO L354 Elim1Store]: treesize reduction 69, result has 13.8 percent of original size [2021-11-25 19:58:57,409 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 57 [2021-11-25 19:58:58,821 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:58:58,821 INFO L388 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 17 treesize of output 23 [2021-11-25 19:58:58,849 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:58:58,850 INFO L388 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 [2021-11-25 19:58:58,868 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:58,874 INFO L388 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 11 [2021-11-25 19:58:58,884 INFO L388 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 11 [2021-11-25 19:58:58,919 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:58,919 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:58,942 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:58:58,942 INFO L388 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 27 treesize of output 34 [2021-11-25 19:58:58,952 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:59,008 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:59,009 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:59,025 INFO L388 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 13 treesize of output 9 [2021-11-25 19:58:59,065 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:58:59,065 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:58:59,188 INFO L388 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 11 [2021-11-25 19:58:59,246 INFO L388 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 11 [2021-11-25 19:58:59,254 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:59,475 INFO L388 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 23 treesize of output 1 [2021-11-25 19:58:59,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:59,548 INFO L354 Elim1Store]: treesize reduction 69, result has 13.8 percent of original size [2021-11-25 19:58:59,548 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 57 [2021-11-25 19:58:59,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:59,577 INFO L354 Elim1Store]: treesize reduction 56, result has 30.0 percent of original size [2021-11-25 19:58:59,578 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 69 [2021-11-25 19:58:59,759 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:58:59,760 INFO L388 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 17 treesize of output 23 [2021-11-25 19:58:59,803 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:58:59,803 INFO L388 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 [2021-11-25 19:58:59,832 INFO L388 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 27 treesize of output 26 [2021-11-25 19:58:59,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:58:59,860 INFO L388 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 27 treesize of output 26 [2021-11-25 19:58:59,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-11-25 19:58:59,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:59,929 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:58:59,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:59,943 INFO L388 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 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-25 19:58:59,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:58:59,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:59,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:59,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:59,995 INFO L388 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 0 case distinctions, treesize of input 53 treesize of output 43 [2021-11-25 19:59:00,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:00,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:00,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:00,014 INFO L388 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 0 case distinctions, treesize of input 53 treesize of output 43 [2021-11-25 19:59:00,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:00,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2021-11-25 19:59:00,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:00,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2021-11-25 19:59:00,111 INFO L388 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 33 treesize of output 13 [2021-11-25 19:59:00,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:00,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:00,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:00,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-11-25 19:59:00,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:00,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:00,270 INFO L354 Elim1Store]: treesize reduction 60, result has 25.0 percent of original size [2021-11-25 19:59:00,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 93 [2021-11-25 19:59:00,300 INFO L388 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 33 treesize of output 13 [2021-11-25 19:59:00,728 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:59:00,728 INFO L388 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 [2021-11-25 19:59:00,738 INFO L388 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 17 treesize of output 19 [2021-11-25 19:59:00,779 INFO L388 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 11 [2021-11-25 19:59:00,785 INFO L388 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 11 [2021-11-25 19:59:00,792 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:00,814 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:00,831 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:59:00,831 INFO L388 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 27 treesize of output 34 [2021-11-25 19:59:00,852 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:59:00,852 INFO L388 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 27 treesize of output 34 [2021-11-25 19:59:00,910 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:59:00,911 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:59:00,955 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:59:00,955 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:59:00,970 INFO L388 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 13 treesize of output 9 [2021-11-25 19:59:01,080 INFO L388 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 11 [2021-11-25 19:59:01,088 INFO L388 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 11 [2021-11-25 19:59:01,142 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:01,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:01,416 INFO L354 Elim1Store]: treesize reduction 69, result has 13.8 percent of original size [2021-11-25 19:59:01,417 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 57 [2021-11-25 19:59:01,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:01,448 INFO L354 Elim1Store]: treesize reduction 56, result has 30.0 percent of original size [2021-11-25 19:59:01,448 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 69 [2021-11-25 19:59:01,459 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:02,754 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:59:02,755 INFO L388 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 17 treesize of output 23 [2021-11-25 19:59:02,801 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:59:02,801 INFO L388 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 [2021-11-25 19:59:02,819 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:02,826 INFO L388 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 11 [2021-11-25 19:59:02,832 INFO L388 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 11 [2021-11-25 19:59:02,855 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:02,873 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:59:02,873 INFO L388 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 27 treesize of output 34 [2021-11-25 19:59:02,894 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:59:02,894 INFO L388 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 27 treesize of output 34 [2021-11-25 19:59:02,948 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:59:02,948 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:59:02,965 INFO L388 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 13 treesize of output 9 [2021-11-25 19:59:03,003 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:59:03,004 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:59:03,127 INFO L388 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 11 [2021-11-25 19:59:03,134 INFO L388 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 11 [2021-11-25 19:59:03,188 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:03,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:03,426 INFO L354 Elim1Store]: treesize reduction 69, result has 13.8 percent of original size [2021-11-25 19:59:03,426 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 57 [2021-11-25 19:59:03,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:03,457 INFO L354 Elim1Store]: treesize reduction 56, result has 30.0 percent of original size [2021-11-25 19:59:03,457 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 69 [2021-11-25 19:59:03,469 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:03,889 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2021-11-25 19:59:03,898 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:59:09,519 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '42918#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (= (select |#valid| |~#list~0.base|) 1) (= (select (select |#memory_$Pointer$.offset| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.offset|) (<= (+ (* 4 |ULTIMATE.start_main_~end_point~0#1|) |~#list~0.offset| 4) (select |#length| |~#list~0.base|)) (<= |#NULL.offset| 0) (= 0 |ULTIMATE.start_main_~cursor~0#1.offset|) (<= |#StackHeapBarrier| |ULTIMATE.start_main_~cursor~0#1.base|) (or (and (= ~unnamed2~0~ITEM_NEXT |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_~end_point~0#1|)) (and (= ~unnamed2~0~ITEM_PREV |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_~end_point~0#1|))) (= |ULTIMATE.start_main_~next~1#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~cursor~0#1.base|) (+ (* |ULTIMATE.start_main_~direction~0#1| 4) |ULTIMATE.start_main_~cursor~0#1.offset|))) (= (select |#valid| |ULTIMATE.start_main_~cursor~0#1.base|) 1) (<= (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) 4 |ULTIMATE.start_main_~cursor~0#1.offset|) (select |#length| |ULTIMATE.start_main_~cursor~0#1.base|)) (<= |#NULL.base| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~cursor~0#1.base|) (+ (* |ULTIMATE.start_main_~direction~0#1| 4) |ULTIMATE.start_main_~cursor~0#1.offset|)) |ULTIMATE.start_main_~next~1#1.base|) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.base|) (not (= |ULTIMATE.start_main_~cursor~0#1.base| 0)) (<= |~#list~0.offset| 0))' at error location [2021-11-25 19:59:09,519 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:59:09,519 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:59:09,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-11-25 19:59:09,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849404580] [2021-11-25 19:59:09,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:59:09,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 19:59:09,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:09,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 19:59:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=3317, Unknown=0, NotChecked=0, Total=3540 [2021-11-25 19:59:09,521 INFO L87 Difference]: Start difference. First operand 548 states and 741 transitions. Second operand has 25 states, 23 states have (on average 2.782608695652174) internal successors, (64), 24 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:59:21,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:21,361 INFO L93 Difference]: Finished difference Result 1442 states and 1853 transitions. [2021-11-25 19:59:21,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-11-25 19:59:21,362 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.782608695652174) internal successors, (64), 24 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-11-25 19:59:21,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:21,368 INFO L225 Difference]: With dead ends: 1442 [2021-11-25 19:59:21,368 INFO L226 Difference]: Without dead ends: 1442 [2021-11-25 19:59:21,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7575 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=2651, Invalid=19699, Unknown=0, NotChecked=0, Total=22350 [2021-11-25 19:59:21,370 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 2108 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 2817 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 3263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:21,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2108 Valid, 1510 Invalid, 3263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2817 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 19:59:21,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-11-25 19:59:21,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 680. [2021-11-25 19:59:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 593 states have (on average 1.4873524451939293) internal successors, (882), 632 states have internal predecessors, (882), 37 states have call successors, (37), 18 states have call predecessors, (37), 18 states have return successors, (37), 29 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-25 19:59:21,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 956 transitions. [2021-11-25 19:59:21,391 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 956 transitions. Word has length 34 [2021-11-25 19:59:21,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:21,391 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 956 transitions. [2021-11-25 19:59:21,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.782608695652174) internal successors, (64), 24 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-25 19:59:21,391 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 956 transitions. [2021-11-25 19:59:21,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 19:59:21,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:21,392 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:21,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:21,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:21,619 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:59:21,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:21,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1997989382, now seen corresponding path program 1 times [2021-11-25 19:59:21,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:21,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286410059] [2021-11-25 19:59:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:21,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:59:22,319 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:22,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286410059] [2021-11-25 19:59:22,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286410059] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:59:22,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137294584] [2021-11-25 19:59:22,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:22,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:22,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:22,322 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:59:22,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 19:59:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:22,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-25 19:59:22,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:22,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:22,772 INFO L388 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 35 treesize of output 34 [2021-11-25 19:59:22,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:22,775 INFO L388 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 35 treesize of output 34 [2021-11-25 19:59:22,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:22,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:22,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:23,008 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:23,008 INFO L388 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 144 treesize of output 142 [2021-11-25 19:59:23,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:23,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:23,017 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:23,017 INFO L388 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 96 treesize of output 72 [2021-11-25 19:59:23,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:23,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:23,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:23,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:23,903 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:23,903 INFO L388 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 220 treesize of output 222 [2021-11-25 19:59:23,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:23,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:23,919 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:23,920 INFO L388 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 241 treesize of output 243 [2021-11-25 19:59:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:59:24,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137294584] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:59:24,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1163084361] [2021-11-25 19:59:24,562 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2021-11-25 19:59:24,563 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:59:24,563 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:59:24,563 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:59:24,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:59:24,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:24,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:24,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:24,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:24,717 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-11-25 19:59:24,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2021-11-25 19:59:24,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:24,856 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:59:24,857 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 255 [2021-11-25 19:59:24,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:24,882 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:59:24,882 INFO L388 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 1 case distinctions, treesize of input 257 treesize of output 232 [2021-11-25 19:59:24,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:24,925 INFO L354 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2021-11-25 19:59:24,925 INFO L388 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 5 case distinctions, treesize of input 260 treesize of output 247 [2021-11-25 19:59:25,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,061 INFO L354 Elim1Store]: treesize reduction 238, result has 11.5 percent of original size [2021-11-25 19:59:25,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 259 treesize of output 249 [2021-11-25 19:59:25,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,089 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-25 19:59:25,089 INFO L388 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 1 case distinctions, treesize of input 245 treesize of output 220 [2021-11-25 19:59:25,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,134 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-25 19:59:25,134 INFO L388 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 5 case distinctions, treesize of input 257 treesize of output 258 [2021-11-25 19:59:25,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,238 INFO L354 Elim1Store]: treesize reduction 160, result has 12.6 percent of original size [2021-11-25 19:59:25,238 INFO L388 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 7 case distinctions, treesize of input 272 treesize of output 261 [2021-11-25 19:59:25,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,311 INFO L354 Elim1Store]: treesize reduction 160, result has 12.6 percent of original size [2021-11-25 19:59:25,311 INFO L388 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 7 case distinctions, treesize of input 270 treesize of output 249 [2021-11-25 19:59:25,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,330 INFO L388 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 0 case distinctions, treesize of input 227 treesize of output 221 [2021-11-25 19:59:25,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,494 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-25 19:59:25,494 INFO L388 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 3 case distinctions, treesize of input 258 treesize of output 236 [2021-11-25 19:59:25,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,569 INFO L354 Elim1Store]: treesize reduction 226, result has 14.7 percent of original size [2021-11-25 19:59:25,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 272 treesize of output 264 [2021-11-25 19:59:25,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,642 INFO L354 Elim1Store]: treesize reduction 208, result has 21.5 percent of original size [2021-11-25 19:59:25,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 258 treesize of output 278 [2021-11-25 19:59:25,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:25,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:25,959 INFO L354 Elim1Store]: treesize reduction 262, result has 11.5 percent of original size [2021-11-25 19:59:25,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 333 treesize of output 311 [2021-11-25 19:59:25,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:25,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:25,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:26,029 INFO L354 Elim1Store]: treesize reduction 273, result has 7.8 percent of original size [2021-11-25 19:59:26,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 285 treesize of output 254 [2021-11-25 19:59:26,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:26,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:26,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:26,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:26,054 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:26,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 228 treesize of output 206 [2021-11-25 19:59:26,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:26,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:26,340 INFO L354 Elim1Store]: treesize reduction 125, result has 8.1 percent of original size [2021-11-25 19:59:26,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 207 treesize of output 174 [2021-11-25 19:59:26,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:26,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:26,682 INFO L354 Elim1Store]: treesize reduction 125, result has 8.1 percent of original size [2021-11-25 19:59:26,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 207 treesize of output 174 [2021-11-25 19:59:27,012 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:59:27,012 INFO L388 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 [2021-11-25 19:59:27,035 INFO L388 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 17 treesize of output 19 [2021-11-25 19:59:27,061 INFO L388 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 11 [2021-11-25 19:59:27,067 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:27,075 INFO L388 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 11 [2021-11-25 19:59:27,116 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:59:27,117 INFO L388 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 27 treesize of output 34 [2021-11-25 19:59:27,153 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:59:27,153 INFO L388 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 27 treesize of output 34 [2021-11-25 19:59:27,167 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:27,234 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:59:27,235 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:59:27,255 INFO L388 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 13 treesize of output 9 [2021-11-25 19:59:27,308 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:59:27,309 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:59:27,534 INFO L388 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 11 [2021-11-25 19:59:27,543 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:27,553 INFO L388 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 11 [2021-11-25 19:59:27,790 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:27,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:27,863 INFO L354 Elim1Store]: treesize reduction 69, result has 13.8 percent of original size [2021-11-25 19:59:27,863 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 57 [2021-11-25 19:59:27,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:27,892 INFO L354 Elim1Store]: treesize reduction 56, result has 30.0 percent of original size [2021-11-25 19:59:27,892 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 69 [2021-11-25 19:59:29,192 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:59:29,192 INFO L388 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 17 treesize of output 23 [2021-11-25 19:59:29,239 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:59:29,240 INFO L388 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 [2021-11-25 19:59:29,257 INFO L388 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 11 [2021-11-25 19:59:29,264 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:29,270 INFO L388 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 11 [2021-11-25 19:59:29,288 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:29,305 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:59:29,305 INFO L388 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 27 treesize of output 34 [2021-11-25 19:59:29,326 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-11-25 19:59:29,326 INFO L388 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 27 treesize of output 34 [2021-11-25 19:59:29,378 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:59:29,378 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:59:29,392 INFO L388 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 13 treesize of output 9 [2021-11-25 19:59:29,429 INFO L354 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2021-11-25 19:59:29,429 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2021-11-25 19:59:29,554 INFO L388 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 11 [2021-11-25 19:59:29,608 INFO L388 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 11 [2021-11-25 19:59:29,615 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:29,882 INFO L388 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 23 treesize of output 1 [2021-11-25 19:59:29,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:29,907 INFO L354 Elim1Store]: treesize reduction 69, result has 13.8 percent of original size [2021-11-25 19:59:29,907 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 57 [2021-11-25 19:59:29,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:29,936 INFO L354 Elim1Store]: treesize reduction 56, result has 30.0 percent of original size [2021-11-25 19:59:29,937 INFO L388 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 3 case distinctions, treesize of input 63 treesize of output 69 [2021-11-25 19:59:30,278 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2021-11-25 19:59:30,287 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:59:36,066 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '45490#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (= |ULTIMATE.start_is_empty_~no_beg~0#1| (ite (and (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_is_empty_~list#1.base|) (+ |ULTIMATE.start_is_empty_~list#1.offset| (* ~unnamed1~0~LIST_BEG 4))) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_is_empty_~list#1.base|) (+ |ULTIMATE.start_is_empty_~list#1.offset| (* ~unnamed1~0~LIST_BEG 4))) 0)) 1 0)) (= |ULTIMATE.start_is_empty_~list#1.base| |ULTIMATE.start_is_empty_#in~list#1.base|) (= |ULTIMATE.start_remove_one_#in~list#1.base| |ULTIMATE.start_remove_one_~list#1.base|) (= |ULTIMATE.start_is_empty_~no_end~0#1| (ite (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_is_empty_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset|)) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_is_empty_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset|)) 0)) 1 0)) (= |ULTIMATE.start_remove_one_#in~from#1| |ULTIMATE.start_main_#t~ret25#1|) (= |ULTIMATE.start_remove_one_#in~from#1| |ULTIMATE.start_remove_one_~from#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_remove_one_#in~list#1.base| |~#list~0.base|) (<= |#NULL.base| 0) (= |~#list~0.offset| |ULTIMATE.start_remove_one_#in~list#1.offset|) (= |ULTIMATE.start_is_empty_~list#1.offset| |ULTIMATE.start_is_empty_#in~list#1.offset|) (= |ULTIMATE.start_is_empty_~list#1.offset| 0) (or (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_#t~ret25#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_#t~ret25#1|)) (<= 0 |~#list~0.offset|) (<= (+ (* 4 ~unnamed1~0~LIST_END) |ULTIMATE.start_is_empty_~list#1.offset| 4) (select |#length| |ULTIMATE.start_is_empty_~list#1.base|)) (= |ULTIMATE.start_is_empty_#in~list#1.base| |ULTIMATE.start_remove_one_~list#1.base|) (<= 3 |~#list~0.base|) (= (select |#valid| |ULTIMATE.start_is_empty_~list#1.base|) 1) (<= 0 |#NULL.offset|) (<= |#StackHeapBarrier| |ULTIMATE.start_is_empty_~list#1.base|) (not (= |ULTIMATE.start_is_empty_~no_end~0#1| |ULTIMATE.start_is_empty_~no_beg~0#1|)) (= |ULTIMATE.start_remove_one_~list#1.offset| |ULTIMATE.start_remove_one_#in~list#1.offset|) (<= 0 |#StackHeapBarrier|) (<= |~#list~0.offset| 0))' at error location [2021-11-25 19:59:36,066 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:59:36,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:59:36,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 14] total 40 [2021-11-25 19:59:36,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743889619] [2021-11-25 19:59:36,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:59:36,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-25 19:59:36,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:36,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-25 19:59:36,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=3904, Unknown=0, NotChecked=0, Total=4290 [2021-11-25 19:59:36,067 INFO L87 Difference]: Start difference. First operand 680 states and 956 transitions. Second operand has 40 states, 39 states have (on average 2.2564102564102564) internal successors, (88), 39 states have internal predecessors, (88), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-25 19:59:44,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:44,775 INFO L93 Difference]: Finished difference Result 1591 states and 2070 transitions. [2021-11-25 19:59:44,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-25 19:59:44,776 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.2564102564102564) internal successors, (88), 39 states have internal predecessors, (88), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 35 [2021-11-25 19:59:44,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:44,784 INFO L225 Difference]: With dead ends: 1591 [2021-11-25 19:59:44,785 INFO L226 Difference]: Without dead ends: 1589 [2021-11-25 19:59:44,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 60 SyntacticMatches, 16 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6295 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=2502, Invalid=15588, Unknown=0, NotChecked=0, Total=18090 [2021-11-25 19:59:44,786 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 3334 mSDsluCounter, 3618 mSDsCounter, 0 mSdLazyCounter, 2978 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3334 SdHoareTripleChecker+Valid, 3515 SdHoareTripleChecker+Invalid, 3812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 2978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:44,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3334 Valid, 3515 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 2978 Invalid, 0 Unknown, 211 Unchecked, 2.1s Time] [2021-11-25 19:59:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2021-11-25 19:59:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 668. [2021-11-25 19:59:44,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 581 states have (on average 1.4767641996557659) internal successors, (858), 620 states have internal predecessors, (858), 37 states have call successors, (37), 18 states have call predecessors, (37), 18 states have return successors, (37), 29 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-25 19:59:44,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 932 transitions. [2021-11-25 19:59:44,813 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 932 transitions. Word has length 35 [2021-11-25 19:59:44,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:44,813 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 932 transitions. [2021-11-25 19:59:44,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.2564102564102564) internal successors, (88), 39 states have internal predecessors, (88), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-25 19:59:44,814 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 932 transitions. [2021-11-25 19:59:44,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 19:59:44,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:44,815 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:44,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-25 19:59:45,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:45,031 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:59:45,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:45,032 INFO L85 PathProgramCache]: Analyzing trace with hash -411645046, now seen corresponding path program 1 times [2021-11-25 19:59:45,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:45,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229200129] [2021-11-25 19:59:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:45,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:59:45,139 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:45,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229200129] [2021-11-25 19:59:45,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229200129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:45,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:45,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:59:45,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798615303] [2021-11-25 19:59:45,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:45,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:59:45,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:45,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:59:45,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:59:45,141 INFO L87 Difference]: Start difference. First operand 668 states and 932 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:59:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:45,365 INFO L93 Difference]: Finished difference Result 1032 states and 1396 transitions. [2021-11-25 19:59:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:59:45,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2021-11-25 19:59:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:45,372 INFO L225 Difference]: With dead ends: 1032 [2021-11-25 19:59:45,372 INFO L226 Difference]: Without dead ends: 1032 [2021-11-25 19:59:45,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:59:45,373 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 339 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:59:45,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 253 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:59:45,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2021-11-25 19:59:45,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 665. [2021-11-25 19:59:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 581 states have (on average 1.4199655765920827) internal successors, (825), 617 states have internal predecessors, (825), 37 states have call successors, (37), 18 states have call predecessors, (37), 18 states have return successors, (37), 29 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-25 19:59:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 899 transitions. [2021-11-25 19:59:45,389 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 899 transitions. Word has length 36 [2021-11-25 19:59:45,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:45,390 INFO L470 AbstractCegarLoop]: Abstraction has 665 states and 899 transitions. [2021-11-25 19:59:45,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:59:45,390 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 899 transitions. [2021-11-25 19:59:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 19:59:45,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:45,391 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:45,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-25 19:59:45,391 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 53 more)] === [2021-11-25 19:59:45,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:45,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1680142043, now seen corresponding path program 1 times [2021-11-25 19:59:45,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:45,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558033233] [2021-11-25 19:59:45,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:45,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:46,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:46,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558033233] [2021-11-25 19:59:46,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558033233] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:59:46,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268890087] [2021-11-25 19:59:46,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:46,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:59:46,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:46,640 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:59:46,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8339ed0-5dc6-4043-8a1d-ae455ef06bc3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-25 19:59:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:46,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-25 19:59:46,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:46,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:46,961 INFO L388 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 16 treesize of output 12 [2021-11-25 19:59:47,225 INFO L388 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 11 [2021-11-25 19:59:47,463 INFO L354 Elim1Store]: treesize reduction 44, result has 31.3 percent of original size [2021-11-25 19:59:47,463 INFO L388 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 49 [2021-11-25 19:59:47,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:47,836 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-25 19:59:47,837 INFO L388 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 25 [2021-11-25 19:59:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:59:47,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:48,235 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:48,236 INFO L388 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 169 treesize of output 173 [2021-11-25 19:59:48,249 INFO L388 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 40 treesize of output 34 [2021-11-25 19:59:48,275 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:59:48,275 INFO L388 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 134 treesize of output 138