./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/tcpy.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/tcpy.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9 --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 a747677fdea16741fbb3fca3d9510254677728ef5906b9bf8e219064accd3a39 --- 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-6b4ec56 [2022-11-20 21:14:41,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:14:41,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:14:41,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:14:41,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:14:41,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:14:41,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:14:41,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:14:41,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:14:41,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:14:41,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:14:41,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:14:41,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:14:41,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:14:41,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:14:41,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:14:41,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:14:41,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:14:41,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:14:41,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:14:41,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:14:41,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:14:41,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:14:41,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:14:41,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:14:41,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:14:41,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:14:41,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:14:41,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:14:41,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:14:41,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:14:41,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:14:41,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:14:41,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:14:41,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:14:41,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:14:41,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:14:41,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:14:41,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:14:41,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:14:41,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:14:41,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 21:14:41,576 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:14:41,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:14:41,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:14:41,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:14:41,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:14:41,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:14:41,579 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:14:41,579 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:14:41,579 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:14:41,579 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:14:41,580 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:14:41,581 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:14:41,581 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:14:41,581 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:14:41,581 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:14:41,582 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:14:41,582 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:14:41,582 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:14:41,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:14:41,583 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:14:41,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:14:41,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:14:41,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:14:41,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:14:41,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:14:41,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:14:41,585 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:14:41,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:14:41,586 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:14:41,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:14:41,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:14:41,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:14:41,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:14:41,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:14:41,587 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:14:41,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:14:41,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:14:41,588 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:14:41,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:14:41,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:14:41,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:14:41,589 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_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a747677fdea16741fbb3fca3d9510254677728ef5906b9bf8e219064accd3a39 [2022-11-20 21:14:41,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:14:41,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:14:41,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:14:41,868 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:14:41,868 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:14:41,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/array-tiling/tcpy.c [2022-11-20 21:14:45,014 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:14:45,191 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:14:45,191 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/sv-benchmarks/c/array-tiling/tcpy.c [2022-11-20 21:14:45,197 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/data/515c5df4f/360b30909d6d43d9b99330ed1150ebb1/FLAGed7a1ccae [2022-11-20 21:14:45,216 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/data/515c5df4f/360b30909d6d43d9b99330ed1150ebb1 [2022-11-20 21:14:45,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:14:45,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:14:45,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:14:45,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:14:45,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:14:45,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:14:45" (1/1) ... [2022-11-20 21:14:45,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a8f0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:14:45, skipping insertion in model container [2022-11-20 21:14:45,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:14:45" (1/1) ... [2022-11-20 21:14:45,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:14:45,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:14:45,401 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_0d219021-19c6-416a-b858-e0d7a7c7e162/sv-benchmarks/c/array-tiling/tcpy.c[395,408] [2022-11-20 21:14:45,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:14:45,435 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:14:45,446 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_0d219021-19c6-416a-b858-e0d7a7c7e162/sv-benchmarks/c/array-tiling/tcpy.c[395,408] [2022-11-20 21:14:45,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:14:45,467 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:14:45,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:14:45 WrapperNode [2022-11-20 21:14:45,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:14:45,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:14:45,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:14:45,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:14:45,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:14:45" (1/1) ... [2022-11-20 21:14:45,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:14:45" (1/1) ... [2022-11-20 21:14:45,504 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2022-11-20 21:14:45,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:14:45,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:14:45,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:14:45,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:14:45,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:14:45" (1/1) ... [2022-11-20 21:14:45,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:14:45" (1/1) ... [2022-11-20 21:14:45,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:14:45" (1/1) ... [2022-11-20 21:14:45,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:14:45" (1/1) ... [2022-11-20 21:14:45,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:14:45" (1/1) ... [2022-11-20 21:14:45,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:14:45" (1/1) ... [2022-11-20 21:14:45,526 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:14:45" (1/1) ... [2022-11-20 21:14:45,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:14:45" (1/1) ... [2022-11-20 21:14:45,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:14:45,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:14:45,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:14:45,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:14:45,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:14:45" (1/1) ... [2022-11-20 21:14:45,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:14:45,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:14:45,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:14:45,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:14:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:14:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:14:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 21:14:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 21:14:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:14:45,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:14:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 21:14:45,704 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:14:45,707 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:14:45,878 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:14:45,915 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:14:45,915 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 21:14:45,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:14:45 BoogieIcfgContainer [2022-11-20 21:14:45,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:14:45,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:14:45,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:14:45,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:14:45,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:14:45" (1/3) ... [2022-11-20 21:14:45,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452259c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:14:45, skipping insertion in model container [2022-11-20 21:14:45,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:14:45" (2/3) ... [2022-11-20 21:14:45,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452259c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:14:45, skipping insertion in model container [2022-11-20 21:14:45,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:14:45" (3/3) ... [2022-11-20 21:14:45,927 INFO L112 eAbstractionObserver]: Analyzing ICFG tcpy.c [2022-11-20 21:14:45,946 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:14:45,946 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 21:14:45,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:14:45,995 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;@32c42e18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:14:45,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 21:14:45,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:14:46,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 21:14:46,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:14:46,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:14:46,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:14:46,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:14:46,013 INFO L85 PathProgramCache]: Analyzing trace with hash -680536009, now seen corresponding path program 1 times [2022-11-20 21:14:46,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:14:46,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213803135] [2022-11-20 21:14:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:14:46,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:14:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:14:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:14:46,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:14:46,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213803135] [2022-11-20 21:14:46,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213803135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:14:46,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:14:46,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:14:46,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145531688] [2022-11-20 21:14:46,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:14:46,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:14:46,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:14:46,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:14:46,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:14:46,389 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2022-11-20 21:14:46,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:14:46,485 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2022-11-20 21:14:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:14:46,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 [2022-11-20 21:14:46,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:14:46,495 INFO L225 Difference]: With dead ends: 24 [2022-11-20 21:14:46,496 INFO L226 Difference]: Without dead ends: 11 [2022-11-20 21:14:46,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:14:46,502 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:14:46,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:14:46,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-20 21:14:46,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-20 21:14:46,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 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) [2022-11-20 21:14:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-11-20 21:14:46,560 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2022-11-20 21:14:46,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:14:46,561 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-11-20 21:14:46,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2022-11-20 21:14:46,572 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-11-20 21:14:46,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 21:14:46,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:14:46,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:14:46,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:14:46,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:14:46,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:14:46,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1007490258, now seen corresponding path program 1 times [2022-11-20 21:14:46,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:14:46,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667844403] [2022-11-20 21:14:46,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:14:46,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:14:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:14:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:14:46,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:14:46,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667844403] [2022-11-20 21:14:46,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667844403] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:14:46,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960480880] [2022-11-20 21:14:46,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:14:46,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:14:46,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:14:46,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:14:46,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 21:14:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:14:46,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:14:46,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:14:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:14:47,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:14:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:14:47,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960480880] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:14:47,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [260408353] [2022-11-20 21:14:47,182 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-20 21:14:47,182 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:14:47,185 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:14:47,202 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:14:47,203 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:14:47,499 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-20 21:14:47,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-20 21:14:47,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-20 21:14:47,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-20 21:14:47,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:47,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:47,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:47,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:47,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:47,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:47,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:47,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:47,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:47,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:48,018 INFO L321 Elim1Store]: treesize reduction 144, result has 13.3 percent of original size [2022-11-20 21:14:48,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 436 treesize of output 417 [2022-11-20 21:14:48,226 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 16 treesize of output 12 [2022-11-20 21:14:48,245 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:14:48,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [260408353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:14:48,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:14:48,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4, 4] total 11 [2022-11-20 21:14:48,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624641651] [2022-11-20 21:14:48,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:14:48,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:14:48,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:14:48,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:14:48,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 21:14:48,497 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:14:48,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:14:48,728 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2022-11-20 21:14:48,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 21:14:48,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 [2022-11-20 21:14:48,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:14:48,729 INFO L225 Difference]: With dead ends: 17 [2022-11-20 21:14:48,730 INFO L226 Difference]: Without dead ends: 12 [2022-11-20 21:14:48,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-20 21:14:48,732 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:14:48,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 12 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:14:48,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-20 21:14:48,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-20 21:14:48,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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) [2022-11-20 21:14:48,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-11-20 21:14:48,738 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2022-11-20 21:14:48,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:14:48,738 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-11-20 21:14:48,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:14:48,739 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-11-20 21:14:48,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 21:14:48,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:14:48,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:14:48,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 21:14:48,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:14:48,940 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:14:48,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:14:48,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1160125243, now seen corresponding path program 1 times [2022-11-20 21:14:48,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:14:48,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994674247] [2022-11-20 21:14:48,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:14:48,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:14:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:14:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:14:49,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:14:49,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994674247] [2022-11-20 21:14:49,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994674247] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:14:49,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671949320] [2022-11-20 21:14:49,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:14:49,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:14:49,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:14:49,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:14:49,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 21:14:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:14:49,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:14:49,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:14:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:14:49,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:14:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:14:49,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671949320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:14:49,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1912201316] [2022-11-20 21:14:49,246 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-20 21:14:49,246 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:14:49,247 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:14:49,247 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:14:49,247 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:14:49,399 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-20 21:14:49,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-20 21:14:49,559 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-20 21:14:49,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-20 21:14:49,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-11-20 21:14:49,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:49,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:49,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:49,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:49,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:49,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:49,901 INFO L321 Elim1Store]: treesize reduction 126, result has 21.7 percent of original size [2022-11-20 21:14:49,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 426 treesize of output 418 [2022-11-20 21:14:50,146 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 16 treesize of output 12 [2022-11-20 21:14:50,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:50,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:50,203 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-20 21:14:50,208 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 3 case distinctions, treesize of input 46 treesize of output 53 [2022-11-20 21:14:50,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:50,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:50,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:50,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:50,299 INFO L321 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2022-11-20 21:14:50,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 318 treesize of output 336 [2022-11-20 21:14:50,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:50,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:50,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:50,435 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-20 21:14:50,436 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 3 case distinctions, treesize of input 46 treesize of output 53 [2022-11-20 21:14:50,518 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:14:51,119 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '228#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= ~MAX~0 100000) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~acopy~0#1.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |ULTIMATE.start_main_~acopy~0#1.offset|))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) |ULTIMATE.start_main_#t~mem14#1|) (<= ~SIZE~0 100000) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~acopy~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem14#1| |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| ~SIZE~0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-20 21:14:51,119 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:14:51,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:14:51,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-20 21:14:51,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429229002] [2022-11-20 21:14:51,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:14:51,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 21:14:51,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:14:51,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 21:14:51,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-20 21:14:51,121 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2022-11-20 21:14:51,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:14:51,158 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2022-11-20 21:14:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:14:51,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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 10 [2022-11-20 21:14:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:14:51,159 INFO L225 Difference]: With dead ends: 21 [2022-11-20 21:14:51,159 INFO L226 Difference]: Without dead ends: 13 [2022-11-20 21:14:51,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-20 21:14:51,160 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:14:51,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:14:51,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-20 21:14:51,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-20 21:14:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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) [2022-11-20 21:14:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-20 21:14:51,165 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2022-11-20 21:14:51,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:14:51,166 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-20 21:14:51,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2022-11-20 21:14:51,166 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-20 21:14:51,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 21:14:51,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:14:51,167 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:14:51,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 21:14:51,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:14:51,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:14:51,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:14:51,373 INFO L85 PathProgramCache]: Analyzing trace with hash -144270058, now seen corresponding path program 2 times [2022-11-20 21:14:51,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:14:51,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047607466] [2022-11-20 21:14:51,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:14:51,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:14:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:14:51,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 21:14:51,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:14:51,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047607466] [2022-11-20 21:14:51,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047607466] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:14:51,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803037664] [2022-11-20 21:14:51,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 21:14:51,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:14:51,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:14:51,951 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:14:51,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 21:14:52,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 21:14:52,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 21:14:52,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 21:14:52,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:14:52,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 21:14:52,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:52,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:52,183 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 23 treesize of output 27 [2022-11-20 21:14:52,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 21:14:52,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:14:52,284 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:14:52,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 478 treesize of output 454 [2022-11-20 21:14:52,296 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 222 treesize of output 186 [2022-11-20 21:14:55,117 INFO L321 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2022-11-20 21:14:55,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 432 treesize of output 387 [2022-11-20 21:14:55,199 INFO L321 Elim1Store]: treesize reduction 27, result has 12.9 percent of original size [2022-11-20 21:14:55,199 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 3 case distinctions, treesize of input 365 treesize of output 331 [2022-11-20 21:14:55,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,287 INFO L321 Elim1Store]: treesize reduction 15, result has 51.6 percent of original size [2022-11-20 21:14:55,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 353 treesize of output 338 [2022-11-20 21:14:55,344 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:55,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 420 treesize of output 376 [2022-11-20 21:14:55,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,414 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 270 treesize of output 262 [2022-11-20 21:14:55,433 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 121 treesize of output 117 [2022-11-20 21:14:55,467 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:55,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 342 treesize of output 1 [2022-11-20 21:14:55,485 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:55,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 271 treesize of output 231 [2022-11-20 21:14:55,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:55,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:55,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:55,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:55,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,617 INFO L321 Elim1Store]: treesize reduction 20, result has 35.5 percent of original size [2022-11-20 21:14:55,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 342 treesize of output 298 [2022-11-20 21:14:55,711 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:55,712 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 3 case distinctions, treesize of input 353 treesize of output 1 [2022-11-20 21:14:55,727 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:55,727 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 3 case distinctions, treesize of input 342 treesize of output 1 [2022-11-20 21:14:55,752 INFO L321 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2022-11-20 21:14:55,753 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 3 case distinctions, treesize of input 275 treesize of output 242 [2022-11-20 21:14:55,829 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:55,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 353 treesize of output 1 [2022-11-20 21:14:55,868 INFO L321 Elim1Store]: treesize reduction 5, result has 83.9 percent of original size [2022-11-20 21:14:55,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 87 [2022-11-20 21:14:55,905 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:55,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 1 [2022-11-20 21:14:55,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,931 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 270 treesize of output 262 [2022-11-20 21:14:55,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,970 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:55,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 342 treesize of output 1 [2022-11-20 21:14:55,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:55,999 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 21:14:55,999 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 259 treesize of output 1 [2022-11-20 21:14:56,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 174 [2022-11-20 21:14:56,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,139 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,139 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 2 case distinctions, treesize of input 342 treesize of output 1 [2022-11-20 21:14:56,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,156 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,156 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 2 case distinctions, treesize of input 275 treesize of output 1 [2022-11-20 21:14:56,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,192 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,193 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 2 case distinctions, treesize of input 155 treesize of output 1 [2022-11-20 21:14:56,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 146 [2022-11-20 21:14:56,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,259 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,259 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 2 case distinctions, treesize of input 222 treesize of output 1 [2022-11-20 21:14:56,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,291 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-20 21:14:56,335 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:56,335 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 3 case distinctions, treesize of input 155 treesize of output 1 [2022-11-20 21:14:56,351 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:56,352 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 3 case distinctions, treesize of input 222 treesize of output 1 [2022-11-20 21:14:56,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,371 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,371 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 2 case distinctions, treesize of input 300 treesize of output 1 [2022-11-20 21:14:56,392 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:56,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 233 treesize of output 1 [2022-11-20 21:14:56,413 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:56,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 300 treesize of output 1 [2022-11-20 21:14:56,433 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 21:14:56,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 323 treesize of output 302 [2022-11-20 21:14:56,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,542 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,543 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 2 case distinctions, treesize of input 233 treesize of output 1 [2022-11-20 21:14:56,570 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:56,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 420 treesize of output 1 [2022-11-20 21:14:56,590 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 21:14:56,591 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 443 treesize of output 1 [2022-11-20 21:14:56,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,634 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 1 [2022-11-20 21:14:56,656 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:56,657 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 3 case distinctions, treesize of input 204 treesize of output 1 [2022-11-20 21:14:56,700 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:56,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 222 treesize of output 1 [2022-11-20 21:14:56,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,715 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 21:14:56,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 31 [2022-11-20 21:14:56,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 1 [2022-11-20 21:14:56,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,754 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 155 treesize of output 1 [2022-11-20 21:14:56,768 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,773 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 342 treesize of output 1 [2022-11-20 21:14:56,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,791 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 155 treesize of output 1 [2022-11-20 21:14:56,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,806 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 275 treesize of output 1 [2022-11-20 21:14:56,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,821 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 1 [2022-11-20 21:14:56,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,836 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 222 treesize of output 1 [2022-11-20 21:14:56,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,851 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 204 treesize of output 1 [2022-11-20 21:14:56,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,872 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 1 [2022-11-20 21:14:56,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,886 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 204 treesize of output 1 [2022-11-20 21:14:56,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,902 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 275 treesize of output 1 [2022-11-20 21:14:56,920 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:56,921 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 3 case distinctions, treesize of input 342 treesize of output 1 [2022-11-20 21:14:56,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:56,955 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:56,956 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 3 case distinctions, treesize of input 271 treesize of output 1 [2022-11-20 21:14:56,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:56,973 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:56,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 151 treesize of output 1 [2022-11-20 21:14:56,990 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:56,991 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 3 case distinctions, treesize of input 271 treesize of output 1 [2022-11-20 21:14:57,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:57,009 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 21:14:57,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 151 treesize of output 1 [2022-11-20 21:14:57,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:57,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,120 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 21:14:57,121 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 3 case distinctions, treesize of input 420 treesize of output 1 [2022-11-20 21:14:57,161 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 467 treesize of output 455 [2022-11-20 21:14:57,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:57,178 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 84 treesize of output 70 [2022-11-20 21:14:57,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,216 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-20 21:14:57,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:57,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:57,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:57,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:57,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,356 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-20 21:14:57,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:57,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,370 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-20 21:14:57,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:57,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:57,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:57,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:57,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,467 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-20 21:14:57,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-20 21:14:57,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,507 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-20 21:14:57,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:57,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-20 21:14:57,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-20 21:14:57,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-20 21:14:57,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-20 21:14:57,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:57,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-20 21:14:57,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 21:14:57,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803037664] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:14:57,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [739694250] [2022-11-20 21:14:57,872 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-20 21:14:57,872 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:14:57,873 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:14:57,873 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:14:57,873 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:14:58,020 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-20 21:14:58,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-20 21:14:58,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-20 21:14:58,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-11-20 21:14:58,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:58,314 INFO L321 Elim1Store]: treesize reduction 126, result has 21.7 percent of original size [2022-11-20 21:14:58,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 426 treesize of output 418 [2022-11-20 21:14:58,515 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 16 treesize of output 12 [2022-11-20 21:14:58,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:58,554 INFO L321 Elim1Store]: treesize reduction 37, result has 35.1 percent of original size [2022-11-20 21:14:58,555 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 3 case distinctions, treesize of input 32 treesize of output 39 [2022-11-20 21:14:58,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:58,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:58,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:58,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:58,747 INFO L321 Elim1Store]: treesize reduction 200, result has 34.0 percent of original size [2022-11-20 21:14:58,747 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 6 new quantified variables, introduced 21 case distinctions, treesize of input 336 treesize of output 392 [2022-11-20 21:14:58,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:58,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:14:58,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:14:58,896 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-20 21:14:58,896 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 3 case distinctions, treesize of input 46 treesize of output 53 [2022-11-20 21:14:58,913 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:14:59,348 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '358#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= ~MAX~0 100000) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~acopy~0#1.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |ULTIMATE.start_main_~acopy~0#1.offset|))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) |ULTIMATE.start_main_#t~mem14#1|) (<= ~SIZE~0 100000) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~acopy~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem14#1| |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| ~SIZE~0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-20 21:14:59,348 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:14:59,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:14:59,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-20 21:14:59,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000341743] [2022-11-20 21:14:59,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:14:59,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 21:14:59,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:14:59,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 21:14:59,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-20 21:14:59,350 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:14:59,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:14:59,553 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-11-20 21:14:59,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 21:14:59,553 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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 11 [2022-11-20 21:14:59,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:14:59,554 INFO L225 Difference]: With dead ends: 19 [2022-11-20 21:14:59,554 INFO L226 Difference]: Without dead ends: 17 [2022-11-20 21:14:59,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2022-11-20 21:14:59,556 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 36 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:14:59,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 18 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:14:59,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-20 21:14:59,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-20 21:14:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:14:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-20 21:14:59,562 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-11-20 21:14:59,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:14:59,562 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-20 21:14:59,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:14:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-20 21:14:59,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 21:14:59,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:14:59,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:14:59,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 21:14:59,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:14:59,769 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:14:59,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:14:59,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1318200786, now seen corresponding path program 1 times [2022-11-20 21:14:59,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:14:59,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290681267] [2022-11-20 21:14:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:14:59,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:14:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:15:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:15:00,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:15:00,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290681267] [2022-11-20 21:15:00,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290681267] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:15:00,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973899561] [2022-11-20 21:15:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:15:00,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:15:00,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:15:00,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:15:00,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d219021-19c6-416a-b858-e0d7a7c7e162/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 21:15:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:15:00,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-20 21:15:00,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:15:00,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 21:15:00,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 21:15:00,801 INFO L321 Elim1Store]: treesize reduction 26, result has 31.6 percent of original size [2022-11-20 21:15:00,801 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 1 case distinctions, treesize of input 28 treesize of output 32 [2022-11-20 21:15:01,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:15:01,019 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-20 21:15:01,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 23 [2022-11-20 21:15:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:15:01,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:15:03,135 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_109 Int) (|ULTIMATE.start_main_~acopy~0#1.offset| Int)) (let ((.cse0 (store (let ((.cse1 (* (- 4) |c_ULTIMATE.start_main_~i~0#1|)) (.cse2 (* 4 c_~SIZE~0))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base|) (+ .cse1 (- 4) .cse2 |ULTIMATE.start_main_~acopy~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse1 (- 4) .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |ULTIMATE.start_main_~acopy~0#1.offset|) v_ArrVal_109))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (select .cse0 (+ |ULTIMATE.start_main_~acopy~0#1.offset| 4))))) is different from false [2022-11-20 21:15:07,376 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:15:07,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 4450 treesize of output 3519 [2022-11-20 21:15:07,466 INFO L321 Elim1Store]: treesize reduction 39, result has 62.1 percent of original size [2022-11-20 21:15:07,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 5487 treesize of output 4913 [2022-11-20 21:15:07,535 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:15:07,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5659 treesize of output 5215