./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_remove_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_remove_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b594cdd667b896d6ce097f6fd96950290806f015d929f3b2b06ffea35d861f89 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:54:50,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:54:50,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:54:50,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:54:50,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:54:50,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:54:50,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:54:50,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:54:50,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:54:50,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:54:50,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:54:50,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:54:50,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:54:50,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:54:50,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:54:50,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:54:50,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:54:50,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:54:50,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:54:50,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:54:50,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:54:50,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:54:50,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:54:50,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:54:50,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:54:50,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:54:50,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:54:50,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:54:50,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:54:50,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:54:50,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:54:50,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:54:50,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:54:50,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:54:50,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:54:50,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:54:50,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:54:50,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:54:50,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:54:50,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:54:50,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:54:50,410 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:54:50,431 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:54:50,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:54:50,431 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:54:50,432 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:54:50,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:54:50,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:54:50,437 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:54:50,437 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:54:50,437 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:54:50,437 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:54:50,438 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:54:50,438 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:54:50,438 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:54:50,438 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:54:50,438 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:54:50,439 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:54:50,439 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:54:50,439 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:54:50,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:54:50,440 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:54:50,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:54:50,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:54:50,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:54:50,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:54:50,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:54:50,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:54:50,441 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:54:50,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:54:50,441 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:54:50,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:54:50,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:54:50,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:54:50,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:54:50,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:54:50,443 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:54:50,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:54:50,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:54:50,443 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:54:50,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:54:50,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:54:50,444 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:54:50,444 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b594cdd667b896d6ce097f6fd96950290806f015d929f3b2b06ffea35d861f89 [2022-12-14 11:54:50,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:54:50,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:54:50,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:54:50,633 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:54:50,633 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:54:50,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/list-simple/dll2n_remove_all.i [2022-12-14 11:54:53,093 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:54:53,271 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:54:53,271 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/sv-benchmarks/c/list-simple/dll2n_remove_all.i [2022-12-14 11:54:53,279 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/data/730ae29b1/051d1bdb2887449b959220cc7992a525/FLAG370a86e27 [2022-12-14 11:54:53,672 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/data/730ae29b1/051d1bdb2887449b959220cc7992a525 [2022-12-14 11:54:53,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:54:53,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:54:53,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:54:53,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:54:53,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:54:53,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:54:53" (1/1) ... [2022-12-14 11:54:53,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f9a2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:54:53, skipping insertion in model container [2022-12-14 11:54:53,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:54:53" (1/1) ... [2022-12-14 11:54:53,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:54:53,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:54:53,940 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/sv-benchmarks/c/list-simple/dll2n_remove_all.i[24090,24103] [2022-12-14 11:54:53,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:54:53,953 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:54:53,987 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/sv-benchmarks/c/list-simple/dll2n_remove_all.i[24090,24103] [2022-12-14 11:54:53,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:54:54,011 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:54:54,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:54:54 WrapperNode [2022-12-14 11:54:54,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:54:54,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:54:54,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:54:54,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:54:54,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:54:54" (1/1) ... [2022-12-14 11:54:54,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:54:54" (1/1) ... [2022-12-14 11:54:54,050 INFO L138 Inliner]: procedures = 126, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2022-12-14 11:54:54,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:54:54,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:54:54,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:54:54,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:54:54,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:54:54" (1/1) ... [2022-12-14 11:54:54,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:54:54" (1/1) ... [2022-12-14 11:54:54,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:54:54" (1/1) ... [2022-12-14 11:54:54,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:54:54" (1/1) ... [2022-12-14 11:54:54,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:54:54" (1/1) ... [2022-12-14 11:54:54,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:54:54" (1/1) ... [2022-12-14 11:54:54,073 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:54:54" (1/1) ... [2022-12-14 11:54:54,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:54:54" (1/1) ... [2022-12-14 11:54:54,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:54:54,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:54:54,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:54:54,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:54:54,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:54:54" (1/1) ... [2022-12-14 11:54:54,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:54:54,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:54:54,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:54:54,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:54:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-12-14 11:54:54,136 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-12-14 11:54:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 11:54:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 11:54:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:54:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:54:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 11:54:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 11:54:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:54:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 11:54:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:54:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:54:54,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:54:54,232 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:54:54,234 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:54:54,259 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-12-14 11:54:54,383 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:54:54,464 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:54:54,464 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 11:54:54,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:54:54 BoogieIcfgContainer [2022-12-14 11:54:54,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:54:54,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:54:54,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:54:54,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:54:54,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:54:53" (1/3) ... [2022-12-14 11:54:54,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544f672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:54:54, skipping insertion in model container [2022-12-14 11:54:54,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:54:54" (2/3) ... [2022-12-14 11:54:54,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544f672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:54:54, skipping insertion in model container [2022-12-14 11:54:54,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:54:54" (3/3) ... [2022-12-14 11:54:54,475 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2022-12-14 11:54:54,495 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:54:54,495 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:54:54,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:54:54,550 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@35e3aa16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:54:54,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:54:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:54:54,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:54:54,562 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:54:54,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:54:54,563 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:54:54,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:54:54,568 INFO L85 PathProgramCache]: Analyzing trace with hash 101430765, now seen corresponding path program 1 times [2022-12-14 11:54:54,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:54:54,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768951137] [2022-12-14 11:54:54,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:54:54,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:54:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:54:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:54:54,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:54:54,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768951137] [2022-12-14 11:54:54,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768951137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:54:54,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:54:54,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:54:54,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742080273] [2022-12-14 11:54:54,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:54:54,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:54:54,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:54:54,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:54:54,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:54:54,809 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) 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) [2022-12-14 11:54:54,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:54:54,874 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2022-12-14 11:54:54,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:54:54,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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 [2022-12-14 11:54:54,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:54:54,882 INFO L225 Difference]: With dead ends: 23 [2022-12-14 11:54:54,883 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 11:54:54,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:54:54,889 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:54:54,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 16 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:54:54,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 11:54:54,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 11:54:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:54:54,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-12-14 11:54:54,920 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2022-12-14 11:54:54,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:54:54,921 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-12-14 11:54:54,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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) [2022-12-14 11:54:54,921 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-12-14 11:54:54,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:54:54,921 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:54:54,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:54:54,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:54:54,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:54:54,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:54:54,923 INFO L85 PathProgramCache]: Analyzing trace with hash -468972983, now seen corresponding path program 1 times [2022-12-14 11:54:54,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:54:54,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616788609] [2022-12-14 11:54:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:54:54,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:54:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:54:55,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:54:55,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:54:55,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616788609] [2022-12-14 11:54:55,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616788609] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:54:55,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56560741] [2022-12-14 11:54:55,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:54:55,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:54:55,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:54:55,072 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:54:55,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:54:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:54:55,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 11:54:55,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:54:55,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:54:55,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:54:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:54:55,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56560741] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:54:55,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2123493661] [2022-12-14 11:54:55,228 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:54:55,228 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:54:55,230 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:54:55,234 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:54:55,234 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:54:55,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:55,307 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:54:55,308 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:54:55,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:55,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 22 [2022-12-14 11:54:55,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:55,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:55,384 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 11:54:55,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 11:54:55,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:55,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:55,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 11:54:55,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:55,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:55,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 11:54:55,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:55,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:55,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 11:54:55,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:55,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:55,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2022-12-14 11:54:55,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:55,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:55,510 INFO L350 Elim1Store]: Elim1 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 41 treesize of output 31 [2022-12-14 11:54:55,650 INFO L321 Elim1Store]: treesize reduction 124, result has 24.8 percent of original size [2022-12-14 11:54:55,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 280 treesize of output 304 [2022-12-14 11:54:55,708 INFO L321 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2022-12-14 11:54:55,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 273 treesize of output 282 [2022-12-14 11:54:55,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:55,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,096 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 11:54:56,096 INFO L350 Elim1Store]: Elim1 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 283 treesize of output 269 [2022-12-14 11:54:56,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,169 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-14 11:54:56,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 287 treesize of output 272 [2022-12-14 11:54:56,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 267 [2022-12-14 11:54:56,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:56,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:56,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:56,323 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-12-14 11:54:56,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 423 treesize of output 446 [2022-12-14 11:54:56,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 354 treesize of output 345 [2022-12-14 11:54:56,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:56,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:56,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 488 treesize of output 518 [2022-12-14 11:54:56,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,479 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-14 11:54:56,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 415 treesize of output 370 [2022-12-14 11:54:56,647 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 11:54:56,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 555 treesize of output 486 [2022-12-14 11:54:56,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 468 treesize of output 376 [2022-12-14 11:54:56,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 366 treesize of output 362 [2022-12-14 11:54:56,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,746 INFO L350 Elim1Store]: Elim1 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 499 treesize of output 430 [2022-12-14 11:54:56,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 415 treesize of output 375 [2022-12-14 11:54:56,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 345 treesize of output 331 [2022-12-14 11:54:56,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:54:56,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:54:56,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:56,933 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 11:54:56,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 189 [2022-12-14 11:54:56,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:56,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:56,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:56,985 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-14 11:54:56,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 178 [2022-12-14 11:54:57,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:57,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:57,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 11:54:57,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:57,042 INFO L350 Elim1Store]: Elim1 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 57 treesize of output 11 [2022-12-14 11:54:57,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 43 [2022-12-14 11:54:57,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:57,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:57,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 11:54:57,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-12-14 11:54:57,163 INFO L321 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2022-12-14 11:54:57,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 65 [2022-12-14 11:54:57,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-12-14 11:54:57,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:57,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:57,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2022-12-14 11:54:57,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:54:57,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:54:57,223 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:54:57,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2123493661] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:54:57,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:54:57,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3, 3] total 7 [2022-12-14 11:54:57,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213637777] [2022-12-14 11:54:57,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:54:57,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:54:57,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:54:57,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:54:57,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:54:57,441 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:54:57,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:54:57,497 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-12-14 11:54:57,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:54:57,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2022-12-14 11:54:57,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:54:57,498 INFO L225 Difference]: With dead ends: 13 [2022-12-14 11:54:57,498 INFO L226 Difference]: Without dead ends: 10 [2022-12-14 11:54:57,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:54:57,499 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:54:57,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:54:57,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-12-14 11:54:57,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-12-14 11:54:57,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:54:57,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-12-14 11:54:57,509 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2022-12-14 11:54:57,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:54:57,509 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-12-14 11:54:57,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:54:57,510 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-12-14 11:54:57,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 11:54:57,510 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:54:57,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:54:57,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:54:57,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:54:57,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:54:57,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:54:57,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1653301004, now seen corresponding path program 1 times [2022-12-14 11:54:57,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:54:57,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611250774] [2022-12-14 11:54:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:54:57,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:54:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:54:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:54:57,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:54:57,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611250774] [2022-12-14 11:54:57,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611250774] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:54:57,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41625422] [2022-12-14 11:54:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:54:57,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:54:57,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:54:57,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:54:57,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:54:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:54:57,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 11:54:57,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:54:57,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:54:57,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:54:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 11:54:57,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41625422] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:54:57,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1529535589] [2022-12-14 11:54:57,882 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:54:57,882 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:54:57,882 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:54:57,882 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:54:57,882 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:54:57,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:57,904 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:54:57,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 26 [2022-12-14 11:54:57,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:57,923 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:54:57,923 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:54:57,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:57,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:57,964 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 11:54:57,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 11:54:57,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:57,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:57,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 11:54:58,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 11:54:58,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2022-12-14 11:54:58,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,036 INFO L350 Elim1Store]: Elim1 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 41 treesize of output 31 [2022-12-14 11:54:58,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 11:54:58,141 INFO L321 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-12-14 11:54:58,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 275 treesize of output 284 [2022-12-14 11:54:58,214 INFO L321 Elim1Store]: treesize reduction 132, result has 20.0 percent of original size [2022-12-14 11:54:58,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 278 treesize of output 294 [2022-12-14 11:54:58,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,617 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-12-14 11:54:58,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 283 treesize of output 269 [2022-12-14 11:54:58,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,700 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 11:54:58,701 INFO L350 Elim1Store]: Elim1 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 5 case distinctions, treesize of input 287 treesize of output 272 [2022-12-14 11:54:58,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,749 INFO L350 Elim1Store]: Elim1 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 276 treesize of output 267 [2022-12-14 11:54:58,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,783 INFO L350 Elim1Store]: Elim1 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 276 treesize of output 267 [2022-12-14 11:54:58,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:58,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:58,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:58,857 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-12-14 11:54:58,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 423 treesize of output 446 [2022-12-14 11:54:58,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:58,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:58,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 488 treesize of output 518 [2022-12-14 11:54:58,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:58,978 INFO L321 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2022-12-14 11:54:58,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 415 treesize of output 370 [2022-12-14 11:54:59,035 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 11:54:59,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 555 treesize of output 480 [2022-12-14 11:54:59,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 462 treesize of output 374 [2022-12-14 11:54:59,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 358 treesize of output 352 [2022-12-14 11:54:59,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 499 treesize of output 430 [2022-12-14 11:54:59,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 415 treesize of output 375 [2022-12-14 11:54:59,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 345 treesize of output 331 [2022-12-14 11:54:59,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:54:59,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:54:59,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:59,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:59,292 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 11:54:59,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 180 [2022-12-14 11:54:59,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:54:59,341 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 11:54:59,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 164 [2022-12-14 11:54:59,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 11:54:59,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,391 INFO L350 Elim1Store]: Elim1 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 57 treesize of output 11 [2022-12-14 11:54:59,418 INFO L321 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2022-12-14 11:54:59,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 30 [2022-12-14 11:54:59,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 11:54:59,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 65 [2022-12-14 11:54:59,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2022-12-14 11:54:59,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 3 [2022-12-14 11:54:59,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-12-14 11:54:59,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:54:59,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:54:59,686 INFO L321 Elim1Store]: treesize reduction 144, result has 28.0 percent of original size [2022-12-14 11:54:59,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 11:54:59,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,794 INFO L321 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-12-14 11:54:59,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 329 treesize of output 312 [2022-12-14 11:54:59,913 INFO L321 Elim1Store]: treesize reduction 39, result has 48.7 percent of original size [2022-12-14 11:54:59,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 76 [2022-12-14 11:54:59,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:54:59,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-12-14 11:54:59,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:54:59,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:54:59,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 69 [2022-12-14 11:55:00,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:00,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:00,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:00,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 69 [2022-12-14 11:55:00,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:55:00,069 INFO L321 Elim1Store]: treesize reduction 39, result has 48.7 percent of original size [2022-12-14 11:55:00,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 82 [2022-12-14 11:55:00,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:55:00,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:00,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-12-14 11:55:00,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:55:00,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:00,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:00,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:00,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 85 [2022-12-14 11:55:00,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:00,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:00,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:00,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 85 [2022-12-14 11:55:00,188 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:55:00,234 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:55:00,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-12-14 11:55:00,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:55:00,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:55:00,452 INFO L321 Elim1Store]: treesize reduction 128, result has 36.0 percent of original size [2022-12-14 11:55:00,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 111 treesize of output 165 [2022-12-14 11:55:00,531 INFO L321 Elim1Store]: treesize reduction 59, result has 38.5 percent of original size [2022-12-14 11:55:00,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 49 [2022-12-14 11:55:00,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:55:00,571 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:55:00,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2022-12-14 11:55:00,585 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:55:00,708 INFO L321 Elim1Store]: treesize reduction 108, result has 36.5 percent of original size [2022-12-14 11:55:00,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 447 treesize of output 436 [2022-12-14 11:55:00,918 INFO L321 Elim1Store]: treesize reduction 39, result has 48.7 percent of original size [2022-12-14 11:55:00,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 82 [2022-12-14 11:55:00,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:55:00,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:55:00,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:00,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-12-14 11:55:00,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:00,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:00,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:00,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 75 [2022-12-14 11:55:00,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:00,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:01,004 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:55:01,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 85 [2022-12-14 11:55:01,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:55:01,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:55:01,989 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:55:02,203 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '204#(and (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) 0))) (< |ULTIMATE.start_main_~i~0#1| 0) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:55:02,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:55:02,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:55:02,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-12-14 11:55:02,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994716597] [2022-12-14 11:55:02,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:55:02,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:55:02,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:02,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:55:02,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 11:55:02,205 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:02,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:02,241 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-12-14 11:55:02,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:55:02,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 9 [2022-12-14 11:55:02,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:02,242 INFO L225 Difference]: With dead ends: 18 [2022-12-14 11:55:02,242 INFO L226 Difference]: Without dead ends: 13 [2022-12-14 11:55:02,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 11:55:02,243 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:02,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:55:02,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-12-14 11:55:02,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-12-14 11:55:02,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:02,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-12-14 11:55:02,245 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2022-12-14 11:55:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:02,245 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-12-14 11:55:02,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-12-14 11:55:02,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 11:55:02,246 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:02,246 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 11:55:02,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:55:02,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:02,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:55:02,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:02,449 INFO L85 PathProgramCache]: Analyzing trace with hash 540763984, now seen corresponding path program 2 times [2022-12-14 11:55:02,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:02,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118063691] [2022-12-14 11:55:02,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:02,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 11:55:02,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:02,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118063691] [2022-12-14 11:55:02,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118063691] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:55:02,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234658714] [2022-12-14 11:55:02,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:55:02,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:02,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:02,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:02,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:55:02,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 11:55:02,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:55:02,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:55:02,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:02,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 11:55:02,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:55:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 11:55:02,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234658714] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:55:02,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [814434235] [2022-12-14 11:55:02,684 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 11:55:02,684 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:55:02,684 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:55:02,684 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:55:02,684 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:55:02,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:02,705 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:55:02,705 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:55:02,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:02,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 22 [2022-12-14 11:55:02,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:02,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:02,744 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 11:55:02,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 11:55:02,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:02,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:02,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 11:55:02,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:02,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:02,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 11:55:02,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:02,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:02,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2022-12-14 11:55:02,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:02,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:02,813 INFO L350 Elim1Store]: Elim1 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 41 treesize of output 31 [2022-12-14 11:55:02,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:02,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:02,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 11:55:02,933 INFO L321 Elim1Store]: treesize reduction 124, result has 24.8 percent of original size [2022-12-14 11:55:02,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 280 treesize of output 304 [2022-12-14 11:55:02,978 INFO L321 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2022-12-14 11:55:02,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 273 treesize of output 282 [2022-12-14 11:55:03,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,280 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 11:55:03,280 INFO L350 Elim1Store]: Elim1 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 283 treesize of output 269 [2022-12-14 11:55:03,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,343 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-14 11:55:03,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 287 treesize of output 272 [2022-12-14 11:55:03,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 267 [2022-12-14 11:55:03,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:55:03,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:55:03,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:55:03,472 INFO L321 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-12-14 11:55:03,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 423 treesize of output 451 [2022-12-14 11:55:03,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 354 treesize of output 345 [2022-12-14 11:55:03,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:55:03,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:55:03,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 488 treesize of output 523 [2022-12-14 11:55:03,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 54 [2022-12-14 11:55:03,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:55:03,543 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 17 [2022-12-14 11:55:03,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:55:03,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 49 [2022-12-14 11:55:03,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-12-14 11:55:03,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:55:03,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,647 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-14 11:55:03,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 415 treesize of output 370 [2022-12-14 11:55:03,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:55:03,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:55:03,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:55:03,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:55:03,900 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 11:55:03,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 185 [2022-12-14 11:55:03,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:55:03,961 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 11:55:03,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 164 [2022-12-14 11:55:03,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,984 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 7 [2022-12-14 11:55:03,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:03,998 INFO L350 Elim1Store]: Elim1 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 11 [2022-12-14 11:55:04,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,042 INFO L350 Elim1Store]: Elim1 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 57 treesize of output 11 [2022-12-14 11:55:04,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 43 [2022-12-14 11:55:04,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 11:55:04,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-12-14 11:55:04,127 INFO L321 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2022-12-14 11:55:04,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 65 [2022-12-14 11:55:04,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2022-12-14 11:55:04,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-12-14 11:55:04,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-12-14 11:55:04,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:55:04,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:55:04,309 INFO L321 Elim1Store]: treesize reduction 144, result has 28.0 percent of original size [2022-12-14 11:55:04,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 118 treesize of output 147 [2022-12-14 11:55:04,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,418 INFO L321 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-12-14 11:55:04,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 313 treesize of output 296 [2022-12-14 11:55:04,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:55:04,535 INFO L321 Elim1Store]: treesize reduction 39, result has 48.7 percent of original size [2022-12-14 11:55:04,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 76 [2022-12-14 11:55:04,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:55:04,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2022-12-14 11:55:04,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:55:04,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 77 [2022-12-14 11:55:04,624 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:55:04,688 INFO L321 Elim1Store]: treesize reduction 39, result has 48.7 percent of original size [2022-12-14 11:55:04,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 82 [2022-12-14 11:55:04,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:55:04,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:55:04,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2022-12-14 11:55:04,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 88 [2022-12-14 11:55:04,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:04,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 88 [2022-12-14 11:55:04,816 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:55:04,852 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 11:55:04,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-12-14 11:55:04,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:55:04,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:55:05,046 INFO L321 Elim1Store]: treesize reduction 128, result has 36.0 percent of original size [2022-12-14 11:55:05,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 111 treesize of output 160 [2022-12-14 11:55:05,124 INFO L321 Elim1Store]: treesize reduction 59, result has 49.1 percent of original size [2022-12-14 11:55:05,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 110 [2022-12-14 11:55:05,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:55:05,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:55:05,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:05,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2022-12-14 11:55:05,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:05,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:05,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:05,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 112 [2022-12-14 11:55:05,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:05,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:05,231 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:55:05,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 122 [2022-12-14 11:55:05,388 INFO L321 Elim1Store]: treesize reduction 108, result has 36.5 percent of original size [2022-12-14 11:55:05,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 589 treesize of output 542 [2022-12-14 11:55:05,500 INFO L321 Elim1Store]: treesize reduction 39, result has 48.7 percent of original size [2022-12-14 11:55:05,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 76 [2022-12-14 11:55:05,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:55:05,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:05,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-12-14 11:55:05,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:55:05,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:05,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:05,559 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:55:05,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 87 [2022-12-14 11:55:05,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:05,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:05,588 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:55:05,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 87 [2022-12-14 11:55:06,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:55:06,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:55:06,605 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:55:06,812 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '328#(and (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) 0))) (< |ULTIMATE.start_main_~i~0#1| 0) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:55:06,812 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:55:06,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:55:06,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-12-14 11:55:06,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327643132] [2022-12-14 11:55:06,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:55:06,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 11:55:06,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:06,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 11:55:06,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 11:55:06,814 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:06,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:06,857 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-12-14 11:55:06,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:55:06,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 12 [2022-12-14 11:55:06,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:06,857 INFO L225 Difference]: With dead ends: 17 [2022-12-14 11:55:06,857 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 11:55:06,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-12-14 11:55:06,858 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:06,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 8 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:55:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 11:55:06,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-14 11:55:06,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-12-14 11:55:06,861 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2022-12-14 11:55:06,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:06,861 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-12-14 11:55:06,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:55:06,861 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-12-14 11:55:06,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 11:55:06,862 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:06,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 11:55:06,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:55:07,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:07,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:55:07,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:07,065 INFO L85 PathProgramCache]: Analyzing trace with hash -416226099, now seen corresponding path program 3 times [2022-12-14 11:55:07,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:07,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899614630] [2022-12-14 11:55:07,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:07,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:08,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:55:08,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:08,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899614630] [2022-12-14 11:55:08,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899614630] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:55:08,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036406282] [2022-12-14 11:55:08,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:55:08,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:08,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:08,480 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:08,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d399a29-fe00-426a-94e1-8497b88752c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:55:09,329 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:55:09,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:55:09,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 151 conjunts are in the unsatisfiable core [2022-12-14 11:55:09,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:09,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:55:09,371 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:55:09,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 11:55:09,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2022-12-14 11:55:09,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2022-12-14 11:55:09,463 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-14 11:55:09,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 11:55:09,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-12-14 11:55:09,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:09,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2022-12-14 11:55:09,551 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 23 treesize of output 29 [2022-12-14 11:55:09,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-12-14 11:55:09,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:09,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 34 [2022-12-14 11:55:09,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 15 [2022-12-14 11:55:09,571 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 23 treesize of output 29 [2022-12-14 11:55:09,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:09,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:09,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:55:09,768 INFO L321 Elim1Store]: treesize reduction 157, result has 21.1 percent of original size [2022-12-14 11:55:09,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 369 treesize of output 180 [2022-12-14 11:55:09,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:09,810 INFO L321 Elim1Store]: treesize reduction 191, result has 18.7 percent of original size [2022-12-14 11:55:09,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 162 treesize of output 98 [2022-12-14 11:55:09,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:09,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:55:09,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:55:09,891 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-12-14 11:55:09,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 107 treesize of output 70 [2022-12-14 11:55:09,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 11:55:09,905 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-14 11:55:09,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 32 [2022-12-14 11:55:09,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 11:55:09,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:55:09,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:55:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:55:09,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:55:10,309 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:55:10,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 120 [2022-12-14 11:55:10,322 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:55:10,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 100 [2022-12-14 11:55:10,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-14 11:55:10,613 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) (.cse1 (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (.cse24 (= 0 |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (.cse23 (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| 0))) (and (or (let ((.cse11 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (and (forall ((v_arrayElimArr_42 (Array Int Int))) (or (not (= (select v_arrayElimArr_42 .cse0) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (not (= 0 (select v_arrayElimArr_42 .cse1))) (forall ((v_ArrVal_577 Int)) (let ((.cse6 (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_42))) (store .cse12 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse12 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse11 v_ArrVal_577))))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse2 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (forall ((v_arrayElimArr_43 (Array Int Int))) (let ((.cse9 (let ((.cse10 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_43))) (store .cse10 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse10 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse11 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))) (let ((.cse3 (select (select .cse9 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= (select v_arrayElimArr_43 .cse1) 0)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| (select v_arrayElimArr_43 .cse0))) (not (= .cse3 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (forall ((v_ArrVal_594 Int)) (= 0 (let ((.cse8 (+ .cse3 4))) (let ((.cse7 (select (select .cse9 .cse2) .cse8))) (select (let ((.cse5 (select (select .cse6 .cse2) .cse8))) (select (let ((.cse4 (store .cse6 .cse5 (store (select .cse6 .cse5) (+ .cse7 8) v_ArrVal_594)))) (store .cse4 |c_ULTIMATE.start_main_~#s~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset| .cse5))) .cse5)) (+ .cse7 4)))))))))))))))) (forall ((v_arrayElimArr_42 (Array Int Int))) (or (not (= (select v_arrayElimArr_42 .cse0) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (not (= 0 (select v_arrayElimArr_42 .cse1))) (forall ((v_ArrVal_577 Int)) (let ((.cse18 (let ((.cse22 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_42))) (store .cse22 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse22 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse11 v_ArrVal_577))))) (let ((.cse19 (select (select .cse18 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (forall ((v_arrayElimArr_43 (Array Int Int))) (let ((.cse16 (let ((.cse21 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_43))) (store .cse21 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse21 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse11 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))) (let ((.cse13 (select (select .cse16 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= (select v_arrayElimArr_43 .cse1) 0)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| (select v_arrayElimArr_43 .cse0))) (not (= .cse13 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (forall ((v_ArrVal_595 Int)) (= (let ((.cse20 (+ .cse13 4))) (let ((.cse15 (select (select .cse16 .cse19) .cse20))) (select (let ((.cse17 (select (select .cse18 .cse19) .cse20))) (select (let ((.cse14 (store .cse16 .cse17 (store (select .cse16 .cse17) (+ .cse15 8) v_ArrVal_595)))) (store .cse14 |c_ULTIMATE.start_main_~#s~0#1.base| (store (select .cse14 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset| .cse15))) .cse17)) (+ .cse15 4)))) 0)))))) (not (= .cse19 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))))))))) (and .cse23 .cse24)) (or (and (forall ((v_arrayElimArr_42 (Array Int Int))) (let ((.cse30 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_42))) (let ((.cse31 (select (select .cse30 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= (select v_arrayElimArr_42 .cse0) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (not (= 0 (select v_arrayElimArr_42 .cse1))) (forall ((v_ArrVal_584 (Array Int Int))) (let ((.cse28 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_584))) (let ((.cse25 (select (select .cse28 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse25 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (forall ((v_ArrVal_595 Int)) (= (let ((.cse32 (+ .cse25 4))) (let ((.cse27 (select (select .cse28 .cse31) .cse32))) (select (let ((.cse29 (select (select .cse30 .cse31) .cse32))) (select (let ((.cse26 (store .cse28 .cse29 (store (select .cse28 .cse29) (+ .cse27 8) v_ArrVal_595)))) (store .cse26 |c_ULTIMATE.start_main_~#s~0#1.base| (store (select .cse26 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset| .cse27))) .cse29)) (+ .cse27 4)))) 0)))))) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse31)))))) (forall ((v_arrayElimArr_42 (Array Int Int))) (let ((.cse37 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_42))) (let ((.cse33 (select (select .cse37 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= (select v_arrayElimArr_42 .cse0) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (not (= 0 (select v_arrayElimArr_42 .cse1))) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse33)) (forall ((v_ArrVal_584 (Array Int Int))) (let ((.cse40 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_584))) (let ((.cse34 (select (select .cse40 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (or (not (= .cse34 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (forall ((v_ArrVal_594 Int)) (= (let ((.cse39 (+ .cse34 4))) (let ((.cse38 (select (select .cse40 .cse33) .cse39))) (select (let ((.cse36 (select (select .cse37 .cse33) .cse39))) (select (let ((.cse35 (store .cse37 .cse36 (store (select .cse37 .cse36) (+ .cse38 8) v_ArrVal_594)))) (store .cse35 |c_ULTIMATE.start_main_~#s~0#1.base| (store (select .cse35 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset| .cse36))) .cse36)) (+ .cse38 4)))) 0))))))))))) (not .cse24) (not .cse23)))) is different from false [2022-12-14 11:55:15,494 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:55:15,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 90 [2022-12-14 11:55:15,522 INFO L321 Elim1Store]: treesize reduction 10, result has 77.3 percent of original size [2022-12-14 11:55:15,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 101 [2022-12-14 11:55:15,549 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:55:15,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 21